PYSEC-2026-2103
At a glance
- Published
- Updated
- CVE
- CVE-2026-34525
- Aliases
- GHSA-c427-h43c-vf67
- CVSS_V3
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
Description
AIOHTTP is an asynchronous HTTP client/server framework for asyncio and Python. Prior to version 3.13.4, multiple Host headers were allowed in aiohttp. This issue has been patched in version 3.13.4.
Affected packages
| Package | Versions |
|---|---|
| PyPI · aiohttp | introduced 0, fixed 3.13.4 |
References
- https://github.com/aio-libs/aiohttp/releases/tag/v3.13.4 ADVISORY
- https://github.com/aio-libs/aiohttp/commit/53e2e6fc58b89c6185be7820bd2c9f40216b3000 FIX
- https://github.com/aio-libs/aiohttp/commit/e00ca3cca92c465c7913c4beb763a72da9ed8349 FIX
- https://github.com/aio-libs/aiohttp/security/advisories/GHSA-c427-h43c-vf67 FIX
Sources
| Source | Licence |
|---|---|
| OSV.dev | CC-BY 4.0 — PyPA Advisory Database |