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🐛 fix(seed): copy from temporary app-data - #3437
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Configuration and environment defaults can enable symlink seeding with temporary app-data. The links dangle when virtualenv removes that cache. Choose copying when the selected app-data store is temporary.
Windows Python 3.9 and 3.10 fail to start interpreter subprocesses when these tests replace the entire environment. Keep host variables while overriding the settings needed for temporary app-data.
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Thank you for the fix. A request on the advisory record: GHSA-4f8h-vr72-p32c (CVE-2026-113713) lists the affected range as As it stands, once the advisory is reviewed into the global advisory database, OSV and pip-audit will flag every release from 21.14.8 on, 21.14.10 and later included, with no fixed version to move to. Downstream we are setting a |
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hanks for flagging it. GHSA-4f8h-vr72-p32c now records 21.14.10 as the patched version. The affected range is >= 20.0.6, < 21.14.10: the advisory traces the incomplete temporary-cache guard to #1661, first released in 20.0.6, so the earlier lower bound of 21.14.8 understated it. Your >=21.14.10 floor matches the fix. |
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The command-line
--symlink-app-dataswitch is disabled when app-data is temporary, butVIRTUALENV_SYMLINK_APP_DATAandvirtualenv.inican still supply a true default. The seeder then linkspipinto a temporary cache that virtualenv deletes after creation, leaving a dangling package path. On a shared temporary directory, another account can claim that path before the environment owner next runs pip. 🐛 This PR copies seed packages whenever the selected app-data store is temporary. It addresses GHSA-4f8h-vr72-p32c.The command-line guard did not cover configuration defaults
add_parser_argumentschanges the switch tostore_falsewhen app-data is temporary. That guards an explicit command-line flag, but configuration and environment values can become the parser default.FromAppData.__init__used that value without checking the selected cache lifetime. The seeder now checksapp_data.transientwhen choosing between copying and linking, so all three option sources follow the same rule. The regression tests create an environment with an unusable persistent cache and check thatpipremains available after the temporary cache is removed.Behavior changes
When app-data is temporary, a symlink request from an environment variable or configuration file now copies seed packages and logs the fallback at debug level. Persistent app-data keeps the requested symlink behavior. Recreate environments that already contain dangling seed links.
Reported by Anthropic's OSS Scanner: ANT-2026-ZOE2GEPC.