AIOHTTP: File descriptor exhaustion in multipart requests

Date Oct 20, 2026

Type Vendor advisory

Signal High-risk advisory

Vendor / Product PyPI · aiohttp

CVE CVE-2026-111066

High-risk advisory CVE-2026-111066

Summary

AIOHTTP: File descriptor exhaustion in multipart requests

Why it matters

GitHub has published a reviewed security advisory for aiohttp. Prioritize it with other application dependency updates, especially because EPSS places it in the 31% percentile.

Operator check

Check whether aiohttp is present in application dependency manifests, lockfiles, or build images. Review the GitHub advisory and upgrade to a patched version where available. CVSS score: 8.2. EPSS probability: 0.4%; percentile: 31%.

Sources

GitHub Advisory GHSA-9xw5-w5jj-pvcg NVD — CVE-2026-111066 Source reference

PatchBrief uses public sources. It does not scan environments, verify exposure, or replace vendor guidance.

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