PYSEC-2026-2094

vendorUSosv

view advisory published 2026-04-01Licence: CC-BY-4.0

AIOHTTP is an asynchronous HTTP client/server framework for asyncio and Python. Prior to version 3.13.4, insufficient restrictions in header/trailer handling could cause uncapped memory usage. This issue has been patched in version 3.13.4.

describes (1)

Related CVEs.

ID	severity	EPSS	exploitable	published
CVE-2026-22815US	—	0.44% (38th)	—	2026-04-01
AIOHTTP is an asynchronous HTTP client/server framework for asyncio and Python. Prior to version 3.13.4, insufficient restrictions in header/trailer handling could cause uncapped m…

references

External citations — patches, advisories, analysis.

https://github.com/aio-libs/aiohttp/commit/0c2e9da51126238a421568eb7c5b53e5b5d17b36FIX
https://github.com/aio-libs/aiohttp/releases/tag/v3.13.4ADVISORY
https://github.com/aio-libs/aiohttp/security/advisories/GHSA-w2fm-2cpv-w7v5FIX

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