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anyio✕security

anyio: AnyIO process-pool workers can block indefinitely on undrained stderr

AnyIO process-pool workers can block indefinitely on undrained stderr (moderate). GHSA-5p39-cfhj-2xmp, CVE-2026-64847, PYSEC-2026-4024.

anyio: AnyIO process-pool workers can block indefinitely on undrained stderr: from its source to your code

osv.devquote checked
security advisory
Your codeby hand
Nemotron fixes

In its own wordsmatches the page ✓

AnyIO process-pool workers can block indefinitely on undrained stderr

osv.dev/vulnerability/GHSA-5p39-cfhj-2…from an advisory databasechecked 2026-10-27#3cb4b8ad19

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read by a advisory-feed · advisory/pypi/anyio/GHSA-5p39-cfhj-2xmp