Open WebUI: Unauthenticated requests can stall the server via uncached OIDC fetches in back-channel logout

Date Sep 10, 2026

Type Vendor advisory

Signal High-risk advisory

Vendor / Product PyPI · open-webui

CVE CVE-2026-87011

High-risk advisory CVE-2026-87011

Summary

Open WebUI: Unauthenticated requests can stall the server via uncached OIDC fetches in back-channel logout

Why it matters

GitHub has published a reviewed security advisory for open-webui. Prioritize it with other application dependency updates, especially because EPSS places it in the 27% percentile.

Operator check

Check whether open-webui is present in application dependency manifests, lockfiles, or build images. Review the GitHub advisory and upgrade to a patched version where available. EPSS probability: 0.3%; percentile: 27%.

Sources

GitHub Advisory GHSA-3g9q-v48f-hh9w NVD — CVE-2026-87011 Source reference

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

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