Moole Vulnerability Database

Find real vulnerabilities before they ship

Medium

CVE-2026-34516

AIOHTTP is an asynchronous HTTP client/server framework for asyncio and Python. Prior to version 3.13.4, a response with an excessive number of multipart headers may be allowed to use more memory than intended, potentially allowing a DoS vulnerability. This issue has been patched in version 3.13.4.

VectorNETWORK

PublishedApr 01, 2026, 21:16

Published Bysecurity-advisories@github.com

Base Score

Score6.6

Affected Versions

Package (Ecosystem)IntroducedFixedLimit

aiohttp(PyPI)03.13.4N/A

References

https://github.com/aio-libs/aiohttp/commit/8a74257b3804c9aac0bf644af93070f68f6c5a6f
https://github.com/aio-libs/aiohttp/releases/tag/v3.13.4
https://github.com/aio-libs/aiohttp/security/advisories/GHSA-m5qp-6w8w-w647

Weakness Type

CWE-770

CVSS Metrics

Base Score

6.6

Vector String

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/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

Base SeverityMedium

Version

4.0

Attack Vector (AV)

NETWORK