VULNERABILITY INTELLIGENCE

CVE-2026-34518

CVSS score5.3 MEDIUM
EPSS probability0.35%
CISA KEVNot currently listed
Published2026-04-01
Last modified2026-10-26
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

Description

AIOHTTP is an asynchronous HTTP client/server framework for asyncio and Python. Prior to version 3.13.4, when following redirects to a different origin, aiohttp drops the Authorization header, but retains the Cookie and Proxy-Authorization headers. This issue has been patched in version 3.13.4.

Weakness classification

  • security-advisories@github.com: CWE-200
  • nvd@nist.gov: NVD-CWE-noinfo

Primary references