CVE-2026-47265: AIOHTTP is vulnerable to cross-origin redirect with per-request cookies

June 3, 2026

Cookies set with the cookies parameter on requests are sent after following a cross-origin redirect.

References

github.com/advisories/GHSA-hg6j-4rv6-33pg
github.com/aio-libs/aiohttp/commit/f54c40851b0d6c4bbdab97ba518a223adda32478
github.com/aio-libs/aiohttp/security/advisories/GHSA-hg6j-4rv6-33pg
nvd.nist.gov/vuln/detail/CVE-2026-47265

Code Behaviors & Features

Detect and mitigate CVE-2026-47265 with GitLab Dependency Scanning

Secure your software supply chain by verifying that all open source dependencies used in your projects contain no disclosed vulnerabilities. Dependency Scanning using SBOM also detects vulnerabilities from proprietary advisories that this site does not include. Learn more about Dependency Scanning using SBOM →