CVE-2026-34520

CRITICAL

9.1

Description

AIOHTTP is an asynchronous HTTP client/server framework for asyncio and Python. Prior to version 3.13.4, the C parser (the default for most installs) accepted null bytes and control characters in response headers. This issue has been patched in version 3.13.4.

Details CVE

Score CVSS v3.19.1

SeveriteCRITICAL

Vecteur CVSSCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H

Vecteur d'attaqueNETWORK

ComplexiteLOW

Privileges requisNONE

Interaction utilisateurNONE

Publie4/1/2026

Derniere modification4/4/2026

Sourcenvd

Observations honeypot0

Faiblesses (CWE)

CWE-113

References

https://github.com/aio-libs/aiohttp/commit/9370b9714a7a56003cacd31a9b4ae16eab109ba4(security-advisories@github.com)

https://github.com/aio-libs/aiohttp/releases/tag/v3.13.4(security-advisories@github.com)

https://github.com/aio-libs/aiohttp/security/advisories/GHSA-63hf-3vf5-4wqf(security-advisories@github.com)

Correlations IOC

Aucune correlation enregistree

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