PyPI/aiohttp CVE-2023-47641: low 3.4, EPSS 0.83%

Aiohttp has inconsistent interpretation of `Content-Length` vs. `Transfer-Encoding` differing in C and Python fallbacks

Action: Upgrade aiohttp to 3.8.0 or later.

pip install aiohttp==3.8.0

Affected

Fixed versions

Sources

• osv: GHSA-xx9p-xxvh-7g8j
• https://github.com/aio-libs/aiohttp/security/advisories/GHSA-xx9p-xxvh-7g8j
• https://nvd.nist.gov/vuln/detail/CVE-2023-47641
• https://github.com/aio-libs/aiohttp/commit/f016f0680e4ace6742b03a70cb0382ce86abe371
• https://github.com/aio-libs/aiohttp
• https://github.com/aio-libs/aiohttp/releases/tag/v3.8.0
• https://github.com/pypa/advisory-database/tree/main/vulns/aiohttp/PYSEC-2023-247.yaml
• https://lists.debian.org/debian-lts-announce/2025/02/msg00002.html

CVE-2023-47641 · published 2023-11-14T20:36:25Z · modified 2025-11-03T22:48:44.279957Z · JSON