| Name | CVE-2026-34516 |
| Description | AIOHTTP is an asynchronous HTTP client/server framework for asyncio and Python. Prior to version 3.13.4, a response with an excessive number of multipart headers may be allowed to use more memory than intended, potentially allowing a DoS vulnerability. This issue has been patched in version 3.13.4. |
| 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) |
| Debian Bugs | 1132582 |
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+deb11u1 | vulnerable | |
| bookworm, bookworm (security) | 3.8.4-1+deb12u1 | vulnerable | |
| trixie (security), trixie | 3.11.16-1+deb13u1 | vulnerable | |
| forky | 3.13.3-3 | vulnerable | |
| sid | 3.13.5-1 | fixed |
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) | 3.13.5-1 | 1132582 |
[trixie] - python-aiohttp <no-dsa> (Minor issue)
[bookworm] - python-aiohttp <no-dsa> (Minor issue)
https://github.com/aio-libs/aiohttp/security/advisories/GHSA-m5qp-6w8w-w647
Fixed by: https://github.com/aio-libs/aiohttp/commit/8a74257b3804c9aac0bf644af93070f68f6c5a6f (v3.13.4)