GHSA-mq44-7p77-q5h7Medium
AIOHTTP: WebSocket client accepts compressed frames without negotiated permessage-deflate
🔗 CVE IDs covered (1)
📋 Description
Summary
The client accepts and decompresses frames with the RSV1 bit set even when the permessage-deflate extension was not negotiated.
Impact
A client may unexpectedly decompress WebSocket frames when explicitly opted out. This could lead to additional CPU/memory consumption, but is unlikely to be a significant issue unless a zip bomb vulnerability or similar is also present.
Patch: https://github.com/aio-libs/aiohttp/commit/47fb6ae354d4fa22048f4dbe7dbf82b625f0a2f6
🎯 Affected products1
- pip/aiohttp:<= 3.14.1
🔗 References (6)
- https://github.com/aio-libs/aiohttp/security/advisories/GHSA-mq44-7p77-q5h7
- https://nvd.nist.gov/vuln/detail/CVE-2026-59881
- https://github.com/aio-libs/aiohttp/pull/12978
- https://github.com/aio-libs/aiohttp/commit/47fb6ae354d4fa22048f4dbe7dbf82b625f0a2f6
- http://github.com/aio-libs/aiohttp/releases/tag/v3.14.2
- https://github.com/advisories/GHSA-mq44-7p77-q5h7