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.

INFO

Published Date :

2026-04-01T20:13:04.893Z

Last Modified :

2026-04-04T03:11:58.583Z

Source :

GitHub_M
AFFECTED PRODUCTS

The following products are affected by CVE-2026-34516 vulnerability.

Vendors Products
Aio-libs
  • Aiohttp
Aiohttp
  • Aiohttp
REFERENCES

Here, you will find a curated list of external links that provide in-depth information to CVE-2026-34516.

URL Resource
https://github.com/aio-libs/aiohttp/commit/8a74257b3804c9aac0bf644af93070f68f6c5a6f cve-icon cve-icon cve-icon
https://github.com/aio-libs/aiohttp/releases/tag/v3.13.4 cve-icon cve-icon cve-icon
https://github.com/aio-libs/aiohttp/security/advisories/GHSA-m5qp-6w8w-w647 cve-icon cve-icon cve-icon
https://nvd.nist.gov/vuln/detail/CVE-2026-34516 cve-icon
https://www.cve.org/CVERecord?id=CVE-2026-34516 cve-icon
Login to claim this CVE

CVSS Vulnerability Scoring System

Detailed values of each vector for above chart.
Attack Vector
Attack Complexity
Attack Requirements
Privileges Required
User Interaction
VS Confidentiality
VS Integrity
VS Availability
SS Confidentiality
SS Integrity
SS Availability
Detailed values of each vector for above chart.
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality Impact
Integrity Impact
Availability Impact