MEDIUM
GHSA-8495-4g3g-x7pr
aiohttp allows request smuggling due to incorrect parsing of chunk extensions
Details
### Summary The Python parser parses newlines in chunk extensions incorrectly which can lead to request smuggling vulnerabilities under certain conditions.
### Impact If a pure Python version of aiohttp is installed (i.e. without the usual C extensions) or `AIOHTTP_NO_EXTENSIONS` is enabled, then an attacker may be able to execute a request smuggling attack to bypass certain firewalls or proxy protections.
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Patch: https://github.com/aio-libs/aiohttp/commit/259edc369075de63e6f3a4eaade058c62af0df71
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Affected packages
References
- https://github.com/aio-libs/aiohttp/security/advisories/GHSA-8495-4g3g-x7pr [WEB]
- https://nvd.nist.gov/vuln/detail/CVE-2024-52304 [ADVISORY]
- https://github.com/aio-libs/aiohttp/commit/259edc369075de63e6f3a4eaade058c62af0df71 [WEB]
- https://github.com/aio-libs/aiohttp [PACKAGE]
- https://lists.debian.org/debian-lts-announce/2025/02/msg00002.html [WEB]