CVE-2026-111066: AIOHTTP: File descriptor exhaustion in multipart requests

October 20, 2026

An attacker can exhaust file descriptors with specially crafted multipart requests.

References

github.com/advisories/GHSA-9xw5-w5jj-pvcg
github.com/aio-libs/aiohttp/commit/2d94633b7f1b4c1ba07d647b629a8440652b2d09
github.com/aio-libs/aiohttp/releases/tag/v3.14.4
github.com/aio-libs/aiohttp/security/advisories/GHSA-9xw5-w5jj-pvcg
nvd.nist.gov/vuln/detail/CVE-2026-111066

Code Behaviors & Features

Detect and mitigate CVE-2026-111066 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 →