QwikSec

Security Database

CVE

CWE

Training

CVE-2026-34516

Published: Apr 1, 2026

Modified: Apr 4, 2026

PUBLISHED

Description

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.

Vendor	Product	Versions
aio-libs	aiohttp	affected `< 3.13.4`

Weaknesses (CWE)

References

https://github.com/aio-libs/aiohttp/security/advisories/GHSA-m5qp-6w8w-w647

x_refsource_CONFIRM

https://github.com/aio-libs/aiohttp/commit/8a74257b3804c9aac0bf644af93070f68f6c5a6f

x_refsource_MISC

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

x_refsource_MISC

Security Training

Train your team to recognize and prevent security threats with our comprehensive security awareness program.

Vulnerability Scanning

Discover vulnerabilities in your applications and infrastructure before attackers do.