https://vulnerability.circl.lu/rss/recent/all/10 Most recent entries from all 2026-09-28T07:41:49.950103+00:00 Vulnerability-Lookup info@circl.lu python-feedgen Contains only the most 10 recent entries. https://vulnerability.circl.lu/vuln/cve-2026-34518 CVE-2026-34518 — AIOHTTP: Cookie and Proxy-Authorization headers leaked on cross-origin redirect 2026-09-28T07:41:49.989601+00:00

Affected: aio-libs aiohttp

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.

 https://vulnerability.circl.lu/vuln/ghsa-966j-vmvw-g2g9 GHSA-966j-vmvw-g2g9 — AIOHTTP leaks Cookie and Proxy-Authorization headers on cross-origin redirect 2026-09-28T07:41:49.989812+00:00

Affected: PyPI: aiohttp

### Summary

When following redirects to a different origin, aiohttp drops the Authorization header, but retains the Cookie and Proxy-Authorization headers.

### Impact

The Cookie and Proxy-Authorizations headers could contain sensitive information which may be leaked to an unintended party after following a redirect.

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Patch: https://github.com/aio-libs/aiohttp/commit/5351c980dcec7ad385730efdf4e1f4338b24fdb6

 https://vulnerability.circl.lu/vuln/pysec-2026-2100 PYSEC-2026-2100 2026-09-28T07:41:49.989862+00:00

Affected: PyPI: aiohttp

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.