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CVE-2026-34519

2.7 low SSVC exploitation: none Analyzed
NVD · CVE.org

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.

Fix

Patch, vendor advisory and mitigation references on NVD 2

Every line above is quoted from NVD, CISA, Microsoft, the vendor's own advisory or DISA; nothing is generated.

Change history 1

  1. First seenCVSS 2.7 · aiohttpNVD modified 2026-10-26 21:10

Affected (CPE criteria) 1

  • cpe:2.3:a:aiohttp:aiohttp:*:*:*:*:*:*:*:*

References 3