Improper Input Validation Affecting python-aiohttp package, versions *
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-DEBIAN13-PYTHONAIOHTTP-18470696
- published31 Jul 2026
- disclosed30 Jul 2026
Introduced: 30 Jul 2026
NewCVE-2026-59881 (opens in a new tab)How to fix?
There is no fixed version for Debian:13 python-aiohttp.
NVD Description
Note: Versions mentioned in the description apply only to the upstream python-aiohttp package and not the python-aiohttp package as distributed by Debian.
See How to fix? for Debian:13 relevant fixed versions and status.
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.
References
- https://security-tracker.debian.org/tracker/CVE-2026-59881
- http://github.com/aio-libs/aiohttp/releases/tag/v3.14.2
- https://github.com/aio-libs/aiohttp/commit/47fb6ae354d4fa22048f4dbe7dbf82b625f0a2f6
- https://github.com/aio-libs/aiohttp/pull/12978
- https://github.com/aio-libs/aiohttp/security/advisories/GHSA-mq44-7p77-q5h7