| Name | CVE-2026-59881 |
| Description | AIOHTTP is an asynchronous HTTP client/server framework for asyncio and Python. Prior to 3.14.2, the WebSocket client accepts and decompresses frames with the RSV1 bit set even when the permessage-deflate extension was not negotiated, allowing a malicious server to cause unexpected CPU and memory consumption. This issue is fixed in version 3.14.2. |
| Source | CVE (at NVD; CERT, ENISA, LWN, oss-sec, fulldisc, Debian ELTS, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more) |
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|---|---|---|
| python-aiohttp (PTS) | bullseye | 3.7.4-1 | vulnerable |
| bullseye (security) | 3.7.4-1+deb11u2 | vulnerable | |
| bookworm, bookworm (security) | 3.8.4-1+deb12u1 | vulnerable | |
| trixie (security), trixie | 3.11.16-1+deb13u1 | vulnerable | |
| forky, sid | 3.14.1-4 | vulnerable |
The information below is based on the following data on fixed versions.
| Package | Type | Release | Fixed Version | Urgency | Origin | Debian Bugs |
|---|---|---|---|---|---|---|
| python-aiohttp | source | (unstable) | (unfixed) |
[trixie] - python-aiohttp <no-dsa> (Minor issue)
https://github.com/aio-libs/aiohttp/security/advisories/GHSA-mq44-7p77-q5h7
https://github.com/aio-libs/aiohttp/pull/12978
Fixed by: https://github.com/aio-libs/aiohttp/commit/47fb6ae354d4fa22048f4dbe7dbf82b625f0a2f6 (v3.14.2)