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CVE-2026-34518

NVD

https://nvd.nist.gov/vuln/detail/CVE-2026-34518

Severity

Unknown
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Summary

AIOHTTP: Cookie and Proxy-Authorization headers leaked on cross-origin redirect

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.

Affected packages

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