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Fix cache client context validation - #8869
Sampada (PingaleSampada) merged 10 commits into
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Sampada (PingaleSampada)
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Add patch changefiles for msal-common and msal-browser linked to PR #8869.
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Copilot review overview
🟡 Changes recommended
Critical client-context validation gaps remain in Node cache keys and auth-scheme access tokens.
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Review effort: Lite
Findings: 2
Open (2)
What changed in this PR
Fixes cache client-context validation to prevent credential collisions and unsafe broadcasts.
Changes:
- Enforces exact client/family ownership matching.
- Validates browser credential broadcasts.
- Adds regression tests and package changefiles.
| File | Summary |
|---|---|
lib/msal-common/test/cache/CacheManager.spec.ts |
Adds collision regression coverage. |
lib/msal-common/src/cache/CacheManager.ts |
Adds owner validation; unresolved critical gap for --separated Node keys (2 votes). |
lib/msal-browser/test/cache/LocalStorage.spec.ts |
Adds broadcast validation coverage. |
lib/msal-browser/src/cache/LocalStorage.ts |
Adds broadcast validation; unresolved critical gap for AccessToken_With_AuthScheme (4 votes). |
change/@azure-msal-common-client-context-validation.json |
Records the common package patch. |
change/@azure-msal-browser-client-context-validation.json |
Records the browser package patch. |
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⚠️ Performance Alert ⚠️
Possible performance regression was detected for benchmark 'msal-node client-credential Regression Test'.
Benchmark result of this commit is worse than the previous benchmark result exceeding threshold 1.10.
| Benchmark suite | Current: e8d603f | Previous: 916beb1 | Ratio |
|---|---|---|---|
ConfidentialClientApplication#acquireTokenByClientCredential-fromCache-resourceIsFirstItemInTheCache |
379785 ops/sec (±0.53%) |
567933 ops/sec (±1.27%) |
1.50 |
ConfidentialClientApplication#acquireTokenByClientCredential-fromCache-resourceIsLastItemInTheCache |
372848 ops/sec (±0.76%) |
615380 ops/sec (±1.12%) |
1.65 |
This comment was automatically generated by workflow using github-action-benchmark.
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Add patch changefiles for msal-common and msal-browser linked to PR #8869.
|
Addressed both Copilot findings in |
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Copilot review overview
🟡 Changes recommended
Unresolved critical legacy-key validation and additional coverage/documentation issues remain.
Get a fresh assessment by requesting another Copilot review.
Review effort: Lite
Findings: 1
Open (2)
Resolved since last review (2)
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Copilot review overview
🟡 Changes recommended
Unresolved owner-matching and broadcast-validation issues could allow incorrect cache entries or miss valid keys.
Get a fresh assessment by requesting another Copilot review.
Review effort: Lite
Findings: 1
Open (1)
Resolved since last review (2)
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Validate structured credential cache keys by their owner segment and reject contextless client-bound cache broadcasts.
Add patch changefiles for msal-common and msal-browser linked to PR #8869.
Validate Node credential owners using credential-type anchors and reject contextless auth-scheme access token broadcasts.
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Treat BroadcastChannel messages as cache update notifications instead of trusted token values. Preserve client-aware routing, synchronize removals, guard asynchronous reload races, and keep encryption context compatible with existing cache entries.
Restore the existing getContext helper name and explicitly handle rejected broadcast cache updates.
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Summary
Related incident: IcM 31000000727400
Validation
@azure/msal-browser: dependency-ordered type build@azure/msal-browser: 120/120 suites, 2,190 passed tests (3 skipped)@azure/msal-browser: lint (0 errors; 2 pre-existing warnings)@azure/msal-browser: format check and API Extractorgit diff --checkassistance: agentic-ide
type: bug
agent-tool: copilot-chat
agent-model: n/a
work-item: AB#n/a