Description

AIOHTTP is an asynchronous HTTP client/server framework for asyncio and Python. Prior to version 3.13.4, an attacker who controls the reason parameter when creating a Response may be able to inject extra headers or similar exploits. This issue has been patched in version 3.13.4.

INFO

Published Date :

2026-04-01T20:26:25.553Z

Last Modified :

2026-04-02T15:40:13.945Z

Source :

GitHub_M
AFFECTED PRODUCTS

The following products are affected by CVE-2026-34519 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-2026-34519.

URL Resource
https://github.com/aio-libs/aiohttp/commit/53b35a2f8869c37a133e60bf1a82a1c01642ba2b 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-mwh4-6h8g-pg8w cve-icon cve-icon cve-icon
https://nvd.nist.gov/vuln/detail/CVE-2026-34519 cve-icon
https://www.cve.org/CVERecord?id=CVE-2026-34519 cve-icon
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CVSS Vulnerability Scoring System

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