chore: Bump Microsoft.AspNetCore.OpenApi and Microsoft.OpenApi - #105

Sourced from Microsoft.AspNetCore.OpenApi's releases.

9.0.20

Release

What's Changed

• [release/9.0] Update branding to 9.0.20 by @​dotnet-bot in [release/9.0] Update branding to 9.0.20 dotnet/aspnetcore#68236
• [release/9.0] Update dependencies from dotnet/arcade by @​dotnet-maestro[bot] in [release/9.0] Update dependencies from dotnet/arcade dotnet/aspnetcore#67897
• [release/9.0] Backport FormsInputDateTest fixes by @​ilonatommy in [release/9.0] Backport FormsInputDateTest fixes dotnet/aspnetcore#68126
• [release/9.0] (deps): Bump src/submodules/googletest from 3064a60 to 3940de9 by @​dependabot[bot] in [release/9.0] (deps): Bump src/submodules/googletest from 3064a60 to 3940de9 dotnet/aspnetcore#68172
• [release/9.0] Update dependencies from dotnet/source-build-assets by @​dotnet-maestro[bot] in [release/9.0] Update dependencies from dotnet/source-build-assets dotnet/aspnetcore#68188
• [release/9.0] Quarantine System_UsesProvidedCertificateNotFromStore by @​wtgodbe in [release/9.0] Quarantine System_UsesProvidedCertificateNotFromStore dotnet/aspnetcore#68243
• [release/9.0] Update dependencies from dotnet/source-build-assets by @​dotnet-maestro[bot] in [release/9.0] Update dependencies from dotnet/source-build-assets dotnet/aspnetcore#68245
• [release/9.0] Update RepoTasksSystemSecurityCryptographyXmlVersion to 8.0.4 by @​wtgodbe in [release/9.0] Update RepoTasksSystemSecurityCryptographyXmlVersion to 8.0.4 dotnet/aspnetcore#68231
• [9.0] Fix Debian package descriptions by @​wtgodbe in [9.0] Fix Debian package descriptions dotnet/aspnetcore#68256
• Remove Publish-Build-Assets variable group from release/9.0 by @​missymessa in Remove Publish-Build-Assets variable group from release/9.0 dotnet/aspnetcore#68266
• [release/9.0] Update dependencies from dotnet/arcade by @​dotnet-maestro[bot] in [release/9.0] Update dependencies from dotnet/arcade dotnet/aspnetcore#68308
• [release/9.0] Drop Microsoft.AspNetCore.Grpc.Swagger by @​Youssef1313 with @​Copilot in [release/9.0] Drop Microsoft.AspNetCore.Grpc.Swagger dotnet/aspnetcore#67954
• Merging internal commits for release/9.0 by @​dotnet-bot in Merging internal commits for release/9.0 dotnet/aspnetcore#68362
• [release/9.0] Update OpenAPI to latest by @​Youssef1313 in [release/9.0] Update OpenAPI to latest dotnet/aspnetcore#68492

Full Changelog: dotnet/aspnetcore@v9.0.19...v9.0.20

9.0.19

Release

What's Changed

• [release/9.0] Update branding to 9.0.19 by @​dotnet-bot in [release/9.0] Update branding to 9.0.19 dotnet/aspnetcore#67623
• [release/9.0] (deps): Bump src/submodules/MessagePack-CSharp from 9614e6f to 365965f by @​dependabot[bot] in [release/9.0] (deps): Bump src/submodules/MessagePack-CSharp from 9614e6f to 365965f dotnet/aspnetcore#67527
• [release/9.0] (deps): Bump src/submodules/googletest from 7140cd4 to 973323e by @​dependabot[bot] in [release/9.0] (deps): Bump src/submodules/googletest from 7140cd4 to 973323e dotnet/aspnetcore#67526
• [release/9.0] Update dependencies from dotnet/source-build-assets by @​dotnet-maestro[bot] in [release/9.0] Update dependencies from dotnet/source-build-assets dotnet/aspnetcore#67328
• [release/9.0] Update CI pipeline to use Windows 2022 image by @​github-actions[bot] in [release/9.0] Update CI pipeline to use Windows 2022 image dotnet/aspnetcore#67287
• [release/9.0] Update npm dependencies by @​wtgodbe in [release/9.0] Update npm dependencies dotnet/aspnetcore#67277
• [release/9.0] Update Selenium and Playwright versions to match main by @​wtgodbe in [release/9.0] Update Selenium and Playwright versions to match main dotnet/aspnetcore#67274
• [release/9.0] Update Node.js version from 20.x to 24.x by @​wtgodbe in [release/9.0] Update Node.js version from 20.x to 24.x dotnet/aspnetcore#67242
• [release/9.0] improve CI flakiness by @​wtgodbe in [release/9.0] improve CI flakiness dotnet/aspnetcore#67646
• [release/9.0] (deps): Bump src/submodules/googletest from 973323e to 3064a60 by @​dependabot[bot] in [release/9.0] (deps): Bump src/submodules/googletest from 973323e to 3064a60 dotnet/aspnetcore#67652
• Merging internal commits for release/9.0 by @​dotnet-bot in Merging internal commits for release/9.0 dotnet/aspnetcore#67795
• Use build identity for internal feeds instead of expired dn-bot-dnceng-artifact-feeds-rw PAT (release/9.0) by @​missymessa in Use build identity for internal feeds instead of expired dn-bot-dnceng-artifact-feeds-rw PAT (release/9.0) dotnet/aspnetcore#67853
• Use System.AccessToken for internal feed auth on release/9.0 by @​missymessa in Use System.AccessToken for internal feed auth on release/9.0 dotnet/aspnetcore#67859

Full Changelog: dotnet/aspnetcore@v9.0.18...v9.0.19

9.0.18

Release

What's Changed

• Update branding to 9.0.18 by @​vseanreesermsft in Update branding to 9.0.18 dotnet/aspnetcore#66983
• [release/9.0] (deps): Bump src/submodules/googletest from d72f9c8 to a721f1b by @​dependabot[bot] in [release/9.0] (deps): Bump src/submodules/googletest from d72f9c8 to a721f1b dotnet/aspnetcore#66974
• [release/9.0] Update dependencies from dotnet/arcade by @​dotnet-maestro[bot] in [release/9.0] Update dependencies from dotnet/arcade dotnet/aspnetcore#66717
• [release/9.0] Update dependencies from dotnet/extensions by @​dotnet-maestro[bot] in [release/9.0] Update dependencies from dotnet/extensions dotnet/aspnetcore#66640
• [release/9.0] Update dependencies from dotnet/source-build-assets by @​dotnet-maestro[bot] in [release/9.0] Update dependencies from dotnet/source-build-assets dotnet/aspnetcore#66992
• [release/9.0] Add 1ES Unofficial pipeline for Components E2E tests by @​wtgodbe in [release/9.0] Add 1ES Unofficial pipeline for Components E2E tests dotnet/aspnetcore#66988
• [release/9.0] Bump Crypto.Xml to 8.0.3 for RepoTasks by @​wtgodbe in [release/9.0] Bump Crypto.Xml to 8.0.3 for RepoTasks dotnet/aspnetcore#66765
• Merging internal commits for release/9.0 by @​vseanreesermsft in Merging internal commits for release/9.0 dotnet/aspnetcore#67104
• [release/9.0] Update npm dependencies by @​wtgodbe in [release/9.0] Update npm dependencies dotnet/aspnetcore#67143
• [release/9.0] Update dependencies from dotnet/arcade by @​dotnet-maestro[bot] in [release/9.0] Update dependencies from dotnet/arcade dotnet/aspnetcore#67057
• [release/9.0] Update Microsoft Identity Web package versions to 3.15.1 by @​wtgodbe in [release/9.0] Update Microsoft Identity Web package versions to 3.15.1 dotnet/aspnetcore#67163
• [release/9.0] (deps): Bump src/submodules/googletest from a721f1b to 7140cd4 by @​dependabot[bot] in [release/9.0] (deps): Bump src/submodules/googletest from a721f1b to 7140cd4 dotnet/aspnetcore#67217
• [release/9.0] Update dependencies from dotnet/source-build-assets by @​dotnet-maestro[bot] in [release/9.0] Update dependencies from dotnet/source-build-assets dotnet/aspnetcore#67113
• [release/9.0] Reject ASCII control characters in cookie auth return URLs by @​github-actions[bot] in [release/9.0] Reject ASCII control characters in cookie auth return URLs dotnet/aspnetcore#67156

Full Changelog: dotnet/aspnetcore@v9.0.17...v9.0.18

9.0.17

Release

What's Changed

• Update branding to 9.0.17 by @​vseanreesermsft in Update branding to 9.0.17 dotnet/aspnetcore#66590
• [release/9.0] Update dependencies from dotnet/arcade by @​dotnet-maestro[bot] in [release/9.0] Update dependencies from dotnet/arcade dotnet/aspnetcore#66482
• [release/9.0] Update dependencies from dotnet/extensions by @​dotnet-maestro[bot] in [release/9.0] Update dependencies from dotnet/extensions dotnet/aspnetcore#66371
• Merging internal commits for release/9.0 by @​vseanreesermsft in Merging internal commits for release/9.0 dotnet/aspnetcore#66661

Full Changelog: dotnet/aspnetcore@v9.0.16...v9.0.17

9.0.16

Release

What's Changed

• [release/9.0] Update branding to 9.0.16 by @​vseanreesermsft in [release/9.0] Update branding to 9.0.16 dotnet/aspnetcore#66206
• [release/9.0] Update NPM dependencies by @​wtgodbe in [release/9.0] Update NPM dependencies dotnet/aspnetcore#66051
• [release/9.0] Move off of dead-lettered Windows preview helix queue by @​wtgodbe in [release/9.0] Move off of dead-lettered Windows preview helix queue dotnet/aspnetcore#66219
• [release/9.0] (deps): Bump src/submodules/googletest from 73a63ea to d72f9c8 by @​dependabot[bot] in [release/9.0] (deps): Bump src/submodules/googletest from 73a63ea to d72f9c8 dotnet/aspnetcore#66088
• [release/9.0] Update dependencies from dotnet/arcade by @​dotnet-maestro[bot] in [release/9.0] Update dependencies from dotnet/arcade dotnet/aspnetcore#65906
• [release/9.0] Fix lodash CVE by adding npm override for >=4.18.0 by @​wtgodbe in [release/9.0] Fix lodash CVE by adding npm override for >=4.18.0 dotnet/aspnetcore#66224
• [release/9.0] Update dependencies from dotnet/extensions by @​dotnet-maestro[bot] in [release/9.0] Update dependencies from dotnet/extensions dotnet/aspnetcore#65907
• [release/9.0] Update azure/msal-browser by @​github-actions[bot] in [release/9.0] Update azure/msal-browser dotnet/aspnetcore#66234
• [release/9.0] Stop overwriting Arcade default MicrosoftTemplateEngineAuthoringTasks… by @​wtgodbe in [release/9.0] Stop overwriting Arcade default MicrosoftTemplateEngineAuthoringTasks… dotnet/aspnetcore#66235
• [release/9.0] Use source-build-assets repo by @​NikolaMilosavljevic in [release/9.0] Use source-build-assets repo dotnet/aspnetcore#66278
• [release/9.0] Update dependencies from dotnet/extensions by @​dotnet-maestro[bot] in [release/9.0] Update dependencies from dotnet/extensions dotnet/aspnetcore#66288
• Merging internal commits for release/9.0 by @​vseanreesermsft in Merging internal commits for release/9.0 dotnet/aspnetcore#66316

Full Changelog: dotnet/aspnetcore@v9.0.15...v9.0.16

9.0.15

Release

What's Changed

• [release/9.0] Update branding to 9.0.15 by @​vseanreesermsft in [release/9.0] Update branding to 9.0.15 dotnet/aspnetcore#65634
• [release/9.0] Update dependencies from dotnet/arcade by @​dotnet-maestro[bot] in [release/9.0] Update dependencies from dotnet/arcade dotnet/aspnetcore#65439
• [release/9.0] Update dependencies from dotnet/extensions by @​dotnet-maestro[bot] in [release/9.0] Update dependencies from dotnet/extensions dotnet/aspnetcore#65438
• [release/9.0] (deps): Bump src/submodules/googletest from 56efe39 to 73a63ea by @​dependabot[bot] in [release/9.0] (deps): Bump src/submodules/googletest from 56efe39 to 73a63ea dotnet/aspnetcore#65587
• [release/9.0] Update dependencies from dotnet/arcade by @​dotnet-maestro[bot] in [release/9.0] Update dependencies from dotnet/arcade dotnet/aspnetcore#65706
• Merging internal commits for release/9.0 by @​vseanreesermsft in Merging internal commits for release/9.0 dotnet/aspnetcore#65731

Full Changelog: dotnet/aspnetcore@v9.0.14...v9.0.15

9.0.14

Release

What's Changed

• Update branding to 9.0.14 by @​vseanreesermsft in Update branding to 9.0.14 dotnet/aspnetcore#65294
• [release/9.0] (deps): Bump src/submodules/googletest from 9156d4c to 56efe39 by @​dependabot[bot] in [release/9.0] (deps): Bump src/submodules/googletest from 9156d4c to 56efe39 dotnet/aspnetcore#65290
• [release/9.0] Remove package baseline by @​Copilot in [release/9.0] Remove package baseline dotnet/aspnetcore#65208
• [release/9.0] Set network isolation policy for aspnetcore-ci by @​github-actions[bot] in [release/9.0] Set network isolation policy for aspnetcore-ci dotnet/aspnetcore#65172
• [release/9.0] Package dotnet-getdocument from current TFM into top-level by @​wtgodbe in [release/9.0] Package dotnet-getdocument from current TFM into top-level dotnet/aspnetcore#65164
• [release/9.0] Fix URL format for JDK download on linux by @​github-actions[bot] in [release/9.0] Fix URL format for JDK download on linux dotnet/aspnetcore#65075
• [release/9.0] Disable parallel restore for Grpc JsonTranscoding by @​github-actions[bot] in [release/9.0] Disable parallel restore for Grpc JsonTranscoding dotnet/aspnetcore#65072
• [release/9.0] Update Ubuntu queue to 22.04 by @​wtgodbe in [release/9.0] Update Ubuntu queue to 22.04 dotnet/aspnetcore#65298
• [release/9.0] Update dependencies from dotnet/extensions by @​dotnet-maestro[bot] in [release/9.0] Update dependencies from dotnet/extensions dotnet/aspnetcore#65117
• [release/9.0] Update dependencies from dotnet/arcade by @​dotnet-maestro[bot] in [release/9.0] Update dependencies from dotnet/arcade dotnet/aspnetcore#65089
• [release/9.0] Update dependencies from dotnet/arcade by @​dotnet-maestro[bot] in [release/9.0] Update dependencies from dotnet/arcade dotnet/aspnetcore#65365
• [release/9.0] Update dependencies from dotnet/extensions by @​dotnet-maestro[bot] in [release/9.0] Update dependencies from dotnet/extensions dotnet/aspnetcore#65364
• [release/9.0] Disable parallel restore for linker tests by @​github-actions[bot] in [release/9.0] Disable parallel restore for linker tests dotnet/aspnetcore#65374
• Merging internal commits for release/9.0 by @​vseanreesermsft in Merging internal commits for release/9.0 dotnet/aspnetcore#65381
• [release/9.0] Switch to non-preview 2022 queue by @​github-actions[bot] in [release/9.0] Switch to non-preview 2022 queue dotnet/aspnetcore#65412

Full Changelog: dotnet/aspnetcore@v9.0.13...v9.0.14

Commits viewable in compare view.

Sourced from Microsoft.OpenApi's releases.

1.6.30

1.6.30 (2026-08-13)

Bug Fixes

• readers: bound YAML anchor/alias expansion to prevent OOM (billion laughs) (1f9aea9)

1.6.29

1.6.29 (2026-04-14)

Bug Fixes

• hidi: update Microsoft.OpenApi.OData to 1.7.6 (11ba851)
• hidi: update Microsoft.OpenApi.OData to 1.7.6 (f596327), closes #​2813

1.6.28

1.6.28 (2025-10-06)

Bug Fixes

• Improve server creation and URL handling logic to maintain port (a15c50e)
• missing deserialization for header content property in 3.0 (7c65a49)
• missing deserialization for header content property in 3.0 (e256d29)

1.6.27

1.6.27 (2025-10-02)

Bug Fixes

• typo in encoding allow reserved deserialization (6eeca52)
• typo in encoding allow reserved deserialization (3fadb7d)

1.6.26

1.6.26 (2025-09-19)

Bug Fixes

• OpenApiEncoding explode default value when using form style (09b5a28)

1.6.25

1.6.25 (2025-08-22)

Bug Fixes

• missing examples when one example is with an empty array. (4697af4)

1.6.24

1.6.24 (2025-04-01)

Bug Fixes

• a flaky behaviour for format property serialization (e072790)
• a flaky behaviour for format property serialization (4d06f86)
• null reference on alternate keys during hidi transform (17247ed)
• null reference on alternate keys during hidi transform (55f0f54)

Commits viewable in compare view.

Sourced from Microsoft.OpenApi's releases.

3.10.2

3.10.2 (2026-08-20)

Bug Fixes

• duplicate schema example when serializing to v2 (#​3045) (50f5a2b)

3.10.1

3.10.1 (2026-08-19)

Bug Fixes

• circular ref guard (#​3033) (8018d40)
• harden yaml parsing (#​3027) (e0d5e9d)

3.10.0

3.10.0 (2026-08-11)

Features

• adds deserialization of the example extension (e5a1080)
• do not ignore multiple types when serializing to 3.0 (#​2960) (ebaf27a)
• serialize license identifier as extension for earlier versions (d090989)
• serialize license identifier as extension for earlier versions (60971ba)

Bug Fixes

• better nullability round-tripping (655c2c8)
• bound YAML anchor/alias expansion to prevent OOM (billion laughs) (#​3000) (2179326)
• deserialize metadata url from extension in earlier version (9387b01)
• marks deprecated properties from the specification as obsolete (787b045)
• marks deprecated properties from the specification as obsolete (953c22a)
• schema: serialize compatibility examples from examples list (5d8ec3a)
• serialize examples as extension in v2/v3 (ff1dbc9)
• serialize examples as extension in v2/v3 (edf3c67)

3.9.0

3.9.0 (2026-07-15)

Features

• adds support for anchor and id external resolution (1591007)
• schema: resolve bare $dynamicRef via $dynamicAnchor index (#​2913) (eacc2fc)
• support relative URI resolution in $dynamicRef (#​2928) (#​2945) (821053b)

Bug Fixes

• adds explicit error message for invalid json pointers (63fc55d)
• adds explicit error message for invalid json pointers (bc93efe)
• default mapping is not being serialized with the correct shape (fe4a25f)
• differentiate unset value from null value in OpenApiSchema.Const (#​2936) (07b525f)
• handle nullability more accurately during serialization for 3.0/2.0 (#​2933) (0ace243)
• validate required properties of security scheme before serialization (#​2952) (f31b192)

3.8.0

3.8.0 (2026-07-03)

Features

• add JsonConverter for OpenApiSchema System.Text.Json serialization (#​2915) (2f8b3d2)
• library: support schema keywords on references (434b2f8)
• library: support schema keywords on references (66a9d04), closes #​2903

Bug Fixes

• Don't silently skip null assignment to OpenApiDocument.Tags (3764142)
• handling of nullable enums for 3.0 (#​2920) (beb68f5)
• library: keep v3 schema references ref-only (c938727)
• preserve JSON Schema 2020-12 keyword siblings on $ref schemas for OAS 3.1+ (#​2896) (08160c8)
• use async method for crypto flush (6e675d9)

3.7.0

3.7.0 (2026-06-10)

Features

• add contains/minContains/maxContains members (78475e3)
• add contains/minContains/maxContains members (1a974f8)
• library: add missing json schema properties (9b1aed6)
• library: add missing json schema properties (82f84e0)

Bug Fixes

• library: always copy unevaluated properties (4907d1c)
• library: avoid false circular refs for external schema re-exports (b635242)
• library: avoid false circular refs for external schema re-exports (7a443c2)
• library: remove unshipped schema extension fallback (cf54bb3)
• library: use version-specific schema keyword callbacks (6e22ec6)
• library: use x-jsonschema schema extensions (eb1891a)

3.6.0

3.6.0 (2026-06-01)

Features

• reader: remove ParseNode infrastructure (9b4f45b)
• Significant performance improvements resulting ~40% reduced allocations when parsing JSON descriptions, ~25% for YAML.

3.5.5

3.5.5 (2026-05-28)

Bug Fixes

• reader: preserve Null flag when nullable appears before type in V3.0/V3.1/V3.2 deserializers (2b9d7f4)

3.5.4

3.5.4 (2026-05-26)

Bug Fixes

• library: handle circular schema references (b3cd42b)
• library: handle circular schema references (91a989f)

3.5.3

3.5.3 (2026-04-27)

Bug Fixes

• null reference exception for boolean component schemas (f97f91a)
• null reference exception for boolean component schemas (fe0b50a)
• schema: support boolean schemas in deserializer for OpenAPI 3.1/3.2 (05b44be)

Performance Improvements

• schema: optimize boolean schema deserialization (7316e3f)

3.5.2

3.5.2 (2026-04-14)

Bug Fixes

• hidi: update Microsoft.OpenApi.OData to 3.2.1 (b0a68fb)
• hidi: update Microsoft.OpenApi.OData to 3.2.1 (8c22ab2), closes #​2811

3.5.1

3.5.1 (2026-03-31)

Bug Fixes

• security scheme references serialization (a5acb89)

3.5.0

3.5.0 (2026-03-20)

Features

• library: add Extensions support for schema references in v3.1/v3.2; add SerializeAsV32 with loop detection (9b422bf)

Bug Fixes

• a bug where path parameter validation would fail if they contained forbidden JSON pointer characters (ef55b2c)
• a bug where path parameter validation would fail if they contained forbidden JSON pointer characters (4b3164a)
• double encoding of json pointer for invalid reference rule (b246cd0)
• encoding of special characters for JSON paths (4c757e1)
• library: do not emit unevaluatedProperties for non-object schemas (852fb4c)
• library: do not emit unevaluatedProperties for non-object schemas (19538aa)
• library: enforce spec-compliant $ref serialization; add Extensions support for schema references in v3.1/v3.2 (9bf61de)
• potential double encoding of paths (471a61a)

3.4.0

3.4.0 (2026-03-04)

Features

• library: preserve PatternProperties as x-jsonschema-patternProperties extension for OpenAPI v2/v3.0 serialization (d969fdc)
• library: Preserve PatternProperties via x-jsonschema-patternProperties extension for OpenAPI v2/v3.0 (16ab5e4)
• securityscheme: add oauth2MetadataUrl support (OpenAPI 3.2) (4509488)

Bug Fixes

• implement unevaluatedProperties as schema per JSON Schema 2020-12 (#​2728) (7c13fb3)
• library: serialize additionalProperties schema in OpenAPI V2 (f3165fa)
• library: serialize additionalProperties schema in OpenAPI V2 documents (3d07756)
• optimize parsing V3.1 documents by reducing GetLocation method allocation on hot path(#​2748) (f690681)

3.3.1

3.3.1 (2026-01-22)

Features

• models: add shared Content interface (#​2695) (338566f)

Bug Fixes

• broken binary compatibility due to interface changes in previous version (d96bba7)

3.3.0

3.3.0 (2026-01-21)

Features

• models: add shared Content interface (9e13b25)
• models: add shared Content interface (#​2695) (9e13b25)
• models: support mutualTLS security scheme (a4efdfe)

3.2.0

3.2.0 (2026-01-19)

Features

• hidi validate command now logs warnings (76a3c0f)
• hidi validate command now logs warnings (62e7d56)

Bug Fixes

• discriminator property validation fails any/allOf cases when it shouldn't (fb6cecc)
• discriminator property validation fails any/allOf cases when it shouldn't (a8fb81c)

3.1.3

3.1.3 (2026-01-16)

Bug Fixes

• Support custom tag ordering (008576c)
• Support custom tag ordering (7610d07)

3.1.2

3.1.2 (2026-01-06)

Bug Fixes

• correct error pointer when extension parser throws OpenApiException (43c75a9)
• wrap extension parser calls in try-catch to ensure correct error pointers (50b44aa)

3.1.1

3.1.1 (2025-12-18)

Bug Fixes

• schema: always serialize additionalProperties: false (6651c36)
• schema: always serialize additionalProperties: false (e36fc95)

3.1.0

3.1.0 (2025-12-17)

Features

• Add type: "null" downcasting when in oneOf and anyOf for OpenAPI v3 (782cf8d)

3.0.3

3.0.3 (2025-12-16)

Bug Fixes

• load JSON documents that are preceded by multiple whitespace (6461bac)
• non-seekable json streams would fail to load as a document (2436d73)
• reading streams in an asp.net context would cause async exceptions (f9e5248)

3.0.2

3.0.2 (2025-12-08)

Bug Fixes

• additional properties serialization should not emit a schema in v2 (946cba9)
• additional properties serialization should not emit booleans in v3.1+ (946cba9)

3.0.1

3.0.1 (2025-11-17)

Bug Fixes

• empty strings should be quoted in yaml (8d215f9)
• empty strings should be quoted in yaml (0ca10db)

3.0.0

3.0.0 (2025-11-11)

⚠ BREAKING CHANGES

• adds support for OpenAPI 3.2.0

Note: Please refer to the upgrade guide for a detailed description of the breaking changes.

Note: ASP.net users should remain on version 1.X for ASP.net < 10, and version 2.X for ASP.net 10, this new major version will be implemented in a future version of ASP.net, more information

Features

• adds support for OpenAPI 3.2.0 (765a8dd)

Special thanks

• Matthieu Costabello

2.12.2

2.12.2 (2026-08-20)

Bug Fixes

• duplicate schema example when serializing to v2 (#​3046) (a6366be)

2.12.1

2.12.1 (2026-08-19)

Bug Fixes

• circular ref guard (#​3033) (#​3039) (406e6fd)
• harden yaml parsing (#​3034) (fdc5718)

2.12.0

2.12.0 (2026-08-12)

Features

• adds deserialization of the example extension (095ae3b)
• serialize license identifier as extension for earlier versions (d5cdce8)
• serialize license identifier as extension for earlier versions (fde38d8)

Bug Fixes

• better nullability round-tripping (7a25659)
• bound YAML anchor/alias expansion to prevent OOM (billion laughs) (#​3000) (a361360)
• bound YAML anchor/alias expansion to prevent OOM (billion laughs) (#​3000) (4db9af0)
• library: serialize multiple schema types as anyOf/oneOf for OpenAPI 3.0 (6568896)
• marks deprecated properties from the specification as obsolete (26aba69)
• marks deprecated properties from the specification as obsolete (abc5301)
• schema: serialize compatibility examples from examples list (be57a7c)
• serialize examples as extension in v2/v3 (d27141b)

2.11.0

2.11.0 (2026-07-15)

Features

• adds support for anchor and id external resolution (557bd6a)
• adds support for anchor and id external resolution (4138e47)
• schema: resolve bare $dynamicRef via $dynamicAnchor index (#​2913) (baf8428)
• schema: resolve bare $dynamicRef via $dynamicAnchor index (#​2913) (a139f83)
• support relative URI resolution in $dynamicRef (#​2928) (#​2945) (6091f5a)
• support relative URI resolution in $dynamicRef (#​2928) (#​2945) (a8688dc)

Bug Fixes

• adds explicit error message for invalid json pointers (#​2955) (a304e56)
• differentiate unset value from null value in OpenApiSchema.Const (#​2936) (a8787af)
• differentiate unset value from null value in OpenApiSchema.Const (#​2936) (e08570f)
• handle nullability more accurately during serialization for 3.0/2.0 (#​2933) (bc11356)
• handle nullability more accurately during serialization for 3.0/2.0 (#​2933) (310b6e2)

2.10.0

2.10.0 (2026-07-03)

Features

• add JsonConverter for OpenApiSchema System.Text.Json serialization (#​2915) (465521b)
• library: support schema keywords on references (2749463), closes #​2903

Bug Fixes

• Don't silently skip null assignment to OpenApiDocument.Tags (#​2917) (6a45a82)
• handling of nullable enums for 3.0 (#​2920) (f4778e0)
• library: keep v3 schema references ref-only (8d811c3)
• preserve JSON Schema 2020-12 keyword siblings on $ref schemas for OAS 3.1+ (#​2896) (fb20d46)
• preserve JSON Schema 2020-12 keyword siblings on $ref schemas for OAS 3.1+ (#​2896) (c79a83e)
• use async method for crypto flush (677b519)

2.9.0

2.9.0 (2026-06-10)

Features

• add contains/minContains/maxContains members (fadb422)
• library: add missing json schema properties (db41a3c)

Bug Fixes

• library: always copy unevaluated properties (3951a31)
• library: avoid false circular refs for external schema re-exports (a058913)
• library: avoid false circular refs for external schema re-exports (1bace68)
• library: merge contains compat members into missing properties (7dc45e1)
• library: remove unshipped schema extension fallback (b301827)
• library: use version-specific schema keyword callbacks (f93d76a)
• library: use x-jsonschema schema extensions (ec04a7f)

2.8.0

2.8.0 (2026-06-01)

Features

• reader: remove ParseNode infrastructure (d7c6a9d)
• Significant performance improvements resulting ~40% reduced allocations when parsing JSON descriptions, ~25% for YAML.

2.7.6

2.7.6 (2026-05-28)

Bug Fixes

• reader: preserve nullable Null flag when type appears after nullable in V3.1/V3.2 deserializers (288e95a)

2.7.5

2.7.5 (2026-05-26)

Bug Fixes

• library: handle circular schema references (acd5088)
• library: handle circular schema references (6bcac39)

2.7.4

2.7.4 (2026-04-27)

Bug Fixes

• null reference exception for boolean component schemas (cc13028)
• schema: support boolean schemas in deserializer for OpenAPI 3.1/3.2 (48aaf23)

Performance Improvements

• schema: optimize boolean schema deserialization (fe6f513)

2.7.3

2.7.3 (2026-04-14)

Bug Fixes

• hidi: update Microsoft.OpenApi.OData to 2.2.1 (1e01cd5)
• hidi: update Microsoft.OpenApi.OData to 2.2.1 (c890703), closes #​2812

2.7.2

2.7.2 (2026-03-31)

Bug Fixes

• security requirement reference serialization (0945eec)

2.7.1

2.7.1 (2026-03-20)

Bug Fixes

• a bug where path parameter validation would fail if they contained forbidden JSON pointer characters (2efd2b2)
• library: do not emit unevaluatedProperties for non-object schemas (28d614f)
• library: enforce spec-compliant $ref serialization; add Extensions support for schema references in v3.1/v3.2 (7640a8a)

2.7.0

2.7.0 (2026-03-05)

Features

• add UnevaluatedPropertiesSchema support to IOpenApiSchema (fb691d6)
• library: preserve PatternProperties as x-jsonschema-patternProperties extension for OpenAPI v2/v3.0 serialization (dd5085a)

Bug Fixes

• address PR feedback on UnevaluatedProperties implementation (80fc0f6)
• correct deserialization and test for UnevaluatedPropertiesSchema (a4d66fc)
• library: serialize additionalProperties schema in OpenAPI V2 (99b653c)
• library: serialize additionalProperties schema in OpenAPI V2 (cef7996)
• optimize parsing V3.1 documents by reducing GetLocation method allocation on hot path(#​2748) (91e697b)
• optimize parsing V3.1 documents by reducing GetLocation method allocation on hot path(#​2748) (06c58a5)

2.6.1

2.6.1 (2026-01-22)

Bug Fixes

• broken binary compatibility due to interface changes in previous version (06f2b85)

2.6.0

2.6.0 (2026-01-21)

Features

• models: add shared Content interface (80e4bbf)
• models: add shared Content interface (#​2695) (338566f)
• models: add shared Content interface (#​2695) (80e4bbf)
• models: support mutualTLS security scheme (f9cf5b8)

2.5.0

2.5.0 (2026-01-19)

Features

• hidi validate command now logs warnings (1d3d085)
• hidi validate command now logs warnings (18ed5ac)

Bug Fixes

• discriminator property validation fails any/allOf cases when it shouldn't (ff6e411)
• discriminator property validation fails any/allOf cases when it shouldn't (7def73d)

2.4.3

2.4.3 (2026-01-16)

Bug Fixes

• Support custom tag ordering (008576c)
• Support custom tag ordering (7610d07)

2.4.2

2.4.2 (2025-12-22)

Bug Fixes

• wrap extension parser calls in try-catch to ensure correct error pointers (63cf4a3)
• wrap extension parser calls in try-catch to ensure correct error pointers (458cabe)

2.4.1

2.4.1 (2025-12-18)

Bug Fixes

• schema: always serialize additionalProperties: false (6651c36)
• schema: always serialize additionalProperties: false (e36fc95)

2.4.0

2.4.0 (2025-12-17)

Features

• Add type: "null" downcasting when in oneOf and anyOf for OpenAPI v3 (782cf8d)

2.3.12

2.3.12 (2025-12-15)

Bug Fixes

• load JSON documents that are preceded by multiple whitespace (640e59a)
• non-seekable json streams would fail to load as a document (76b0159)
• non-seekable json streams would fail to load as a document (2436d73)
• reading streams in an asp.net context would cause async exceptions (f9e5248)

2.3.11

2.3.11 (2025-12-08)

Bug Fixes

• additional properties serialization should not emit a schema in v2 (946cba9)
• additional properties serialization should not emit a schema in v2 fix: additional properties serialization should not emit booleans in v3.1+ (275dd9d)
• additional properties serialization should not emit booleans in v3.1+ (946cba9)

2.3.10

2.3.10 (2025-11-17)

Bug Fixes

• empty strings should be quoted in yaml (e919b33)
• empty strings should be quoted in yaml (0ca10db)

2.3.9

2.3.9 (2025-11-06)

Bug Fixes

• a bug where null sentinel value would appear in YAML documents (15618e1)

2.3.8

2.3.8 (2025-10-27)

Bug Fixes

• an issue where numeric property names would be missing quotes in yaml conversion (da43c98)
• quote property names in yaml that match boolean values (39a9f41)
• yaml blocks and line returns (b053848)

2.3.7

2.3.7 (2025-10-24)

Bug Fixes

• adds a null value sentinel to enable roundtrip serializations of JsonNode typed properties (337c6eb)
• adds a null value sentinel to enable roundtrip serializations of JsonNode typed properties (63b2b98)
• fixes a bug where yaml null values would end up as a string "null" during roundtrip serialization (6e62de2)
• fixes a bug where yaml null values would end up as a string "null" during roundtrip serialization (994184b)
• YamlConverter adding extra quotes to string values when converting from JSON to YAML (ccfebc8)

Performance Improvements

• do not duplicate nodes when indexing (dbbbf13)
• only initialize map node nodes on demand (bdb5264)
• reduce allocations in mapnode (f58aad2)
• removes the lazy initialization since the node is always enumerated (1c96521)
• switches to lazy instantiation (d3c758b)
• use deep equals for comparison to reduce allocations (6ce3214)

2.3.6

2.3.6 (2025-10-20)

Bug Fixes

• a bug where empty collections would not be serialized for default values (4c4d257)

2.3.5

2.3.5 (2025-10-14)

Bug Fixes

• use settings for terse output in serialization extension methods (246039b)
• use settings for terse output in serialization extension methods (8b91278)

2.3.4

2.3.4 (2025-10-06)

Bug Fixes

• Improve server creation and URL handling logic to maintain port (3e6ee80)
• missing deserialization for header content property in 3.1 and 3.0 (717f154)
• missing deserialization for header content property in 3.1 and 3.0 (0fdfae1)

2.3.3

2.3.3 (2025-10-02)

Bug Fixes

• typo in allowReserved property name for deserialization (1633453)
• typo in allowReserved property name for deserialization (f7e34be)

2.3.2

2.3.2 (2025-09-19)

Bug Fixes

• Fix URL processing in InternalLoad method would not detect the filename/scheme properly in some scenarios (d93689c)
• OpenApiEncoding explode property serialization defaults with form style (ae03eab)

2.3.1

2.3.1 (2025-09-08)

Bug Fixes

• file access for "file" URI scheme with special characters (6dded81)

2.3.0

2.3.0 (2025-08-29)

Features

• adds the detected format as part of the diagnostic (#​2482) (59d7c81)
• adds the detected format to the diagnostics (59d7c81)

2.2.0

2.2.0 (2025-08-25)

Features

• add Validation Rule for path operations to not have a request body (d101fc3)

Bug Fixes

• missing examples when one example is with an empty array. (cb1c496)

2.1.0

2.1.0 (2025-08-20)

Features

• adds a default validation rule for unresolved references (90b3966)

Bug Fixes

• Improve OpenApiWalker performance (a007c03)
• Validate schema property is not null (3326022)

2.0.1

2.0.1 (2025-08-18)

Bug Fixes

• add missing disposable for stream (0c1ccbd)

2.0.0

2.0.0 (2025-07-10)

Features

• General availability of version 2 with support for OpenAPI 3.1!!! 🎉🎉🎉 (a02d74c)

Bug Fixes

• inconsistent visibility of properties in current keys class (cb9772f)
• removes extraneous default value constant (bf8d0b6)
• removes loop methods from parsing context as its available in loop detector instead (de3531b)
• removes public mermaid types that were not usuable (ef7ae33)
• removes redundant marker interface (5a055f9)
• switches to a getter for API consistency (7975082)
• unconsistent visibility of properties in current keys class (d0c20ab)
• visibility of extension methods (1e9112a)

2.0.0-preview9

2.0.0-preview9 (2025-02-21)

Features

• add support for dependentRequired (75d7a66)

Bug Fixes

• an issue where deprecation extension parsing would fail (5db8757)
• an issue where deprecation extension parsing would fail (b59864c)
• refactor ToIdentifier() to normalize flaggable enums (#​2156) (b80e934)

2.0.0-preview8

2.0.0-preview8 (2025-02-17)

Bug Fixes

• a bug where external reference loading for local files would not work on linux (df99a00)
• add meaningful exception message during validation (4a6547d)
• add meaningful exception message during validation (74d20ed)
• adds a cancellation token argument to external document loading ([a5ffab1](https://github.com/microsoft......

Description has been truncated