CVE-2026-34513 | THREATINT

Description

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.

PUBLISHED Reserved 2026-03-30 | Published 2026-04-01 | Updated 2026-04-02 | Assigner GitHub_M

LOW: 2.7CVSS: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

Problem types

CWE-770: Allocation of Resources Without Limits or Throttling

Product status

< 3.13.4

affected

References

github.com/...iohttp/security/advisories/GHSA-hcc4-c3v8-rx92

github.com/...ommit/c4d77c3533122be353b8afca8e8675e3b4cbda98

github.com/aio-libs/aiohttp/releases/tag/v3.13.4

cve.org (CVE-2026-34513)

nvd.nist.gov (CVE-2026-34513)

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