Request smuggling in aiohttp
13Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 5.3epss 0.9%
exploitation probability
0.9%top 45% of all CVEs
observed exploitation
nono source reports it
aiohttp is an asynchronous HTTP client/server framework for asyncio and Python. The HTTP parser in AIOHTTP has numerous problems with header parsing, which could lead to request smuggling. This parser is only used when AIOHTTP_NO_EXTENSIONS is enabled (or not using a prebuilt wheel). These bugs have been addressed in commit `d5c12ba89` which has been included in release version 3.8.6. Users are advised to upgrade. There are no known workarounds for these issues.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
Affected products
aio-libs · aiohttpReferences
https://github.com/aio-libs/aiohttp/commit/d5c12ba890557a575c313bb3017910d7616fce3dhttps://github.com/aio-libs/aiohttp/security/advisories/GHSA-gfw2-4jvh-wgfghttps://lists.debian.org/debian-lts-announce/2025/02/msg00002.htmlhttps://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/FUSJVQ7OQ55RWL4XAX2F5EZ73N4ZSH6U/https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/VDKQ6HM3KNDU4OQI476ZWT4O7DMSIT35/https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/WQYQL6WV535EEKSNH7KRARLLMOW5WXDM/