CVE-2026-69243: AIOHTTP: HTTP request smuggling via WebSocket upgrade
The HTTP parsers were vulnerable to a request smuggling attack relating to WebSocket upgrades.
References
- github.com/advisories/GHSA-mfx4-hv73-q22v
- github.com/aio-libs/aiohttp/commit/6ae358f0983c3f4d6f67692b2f8e65dc8e091c98
- github.com/aio-libs/aiohttp/pull/13017
- github.com/aio-libs/aiohttp/releases/tag/v3.14.2
- github.com/aio-libs/aiohttp/security/advisories/GHSA-mfx4-hv73-q22v
- nvd.nist.gov/vuln/detail/CVE-2026-69243
Code Behaviors & Features
Detect and mitigate CVE-2026-69243 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 →