CVE-2024-52304
HIGH7.5EPSS 0.42%aiohttp allows request smuggling due to incorrect parsing of chunk extensions
Published: 11/18/2024Modified: 2/4/2026
Description
### 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. ----- Patch: https://github.com/aio-libs/aiohttp/commit/259edc369075de63e6f3a4eaade058c62af0df71
Affected packages (2)
- Debian/python-aiohttpfrom 0, < 3.7.4-1+deb11u1
- PyPI/aiohttpfrom 0, < 3.10.11
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 4.0 | — | CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X |
| osv | CVSS 3.1 | HIGH7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N |
References (6)
- ADVISORYhttps://nvd.nist.gov/vuln/detail/CVE-2024-52304
- ADVISORYhttps://security-tracker.debian.org/tracker/CVE-2024-52304
- PATCHhttps://github.com/aio-libs/aiohttp
- WEBhttps://github.com/aio-libs/aiohttp/commit/259edc369075de63e6f3a4eaade058c62af0df71
- WEBhttps://github.com/aio-libs/aiohttp/security/advisories/GHSA-8495-4g3g-x7pr
- WEBhttps://lists.debian.org/debian-lts-announce/2025/02/msg00002.html