Moole Vulnerability Database

Find real vulnerabilities before they ship

High

CVE-2026-34513

AIOHTTP is an asynchronous HTTP client/server framework for asyncio and Python. Prior to version 3.13.4, an unbounded DNS cache could result in excessive memory usage possibly resulting in a DoS situation. This issue has been patched in version 3.13.4.

VectorNETWORK

PublishedApr 01, 2026, 21:16

Published Bysecurity-advisories@github.com

Base Score

Score7.5

Affected Versions

Package (Ecosystem)IntroducedFixedLimit

aiohttp(PyPI)03.13.4N/A

References

https://github.com/aio-libs/aiohttp/commit/c4d77c3533122be353b8afca8e8675e3b4cbda98
https://github.com/aio-libs/aiohttp/releases/tag/v3.13.4
https://github.com/aio-libs/aiohttp/security/advisories/GHSA-hcc4-c3v8-rx92

Weakness Type

CWE-770

CVSS Metrics

Base Score

2.7

Vector String

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/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 SeverityLow

Version

4.0

Attack Vector (AV)

NETWORK