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Advisory record · GHSA-vjr8-56p3-fmqq

Keycloak unable to restrict access to the admin console

CVSS 3.7 LowEPSS 0.0041 · 35th percentile

Published by the GitHub Advisory Database at 2 Dec 2025, 01:21 UTC. agentprime has not analysed this yet, so whether it affects any app is not known.

PackageEcosystemAffectedFixed in
org.keycloak:keycloak-quarkus-serverMaven<26.4.426.4.4
Identifiers
GHSA-vjr8-56p3-fmqq · CVE-2025-10939
Weakness (CWE)
CWE-427
Tags
Published
2 Dec 2025
Updated
10 Sept 2026

Machine-written summary

Summary written by Claude Haiku from the source advisory. Not reviewed by a person.

Keycloak (org.keycloak:keycloak-quarkus-server, versions before 26.4.4) can be reached at the admin console path even when a proxy is configured to block external access to /admin. An attacker who can send requests through the proxy can use relative or non-normalized paths to get past the block. The source gives few details beyond ha-proxy being affected. Upgrade to 26.4.4 or later.

Written 2 Nov 2026.

Not analysed yet

We haven’t published our analysis of this Advisory yet. Once a person has reviewed it, this page will say what’s vulnerable, what has to be true for your app to be affected, and how to check.

Severity and exploitation

ScoreRatingCVSSVectorSource
3.7 Low 3.1 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N CNA (redhat)
  • CISA KEV Not listed.
  • EPSS 0.0041, the 35th percentile, on 6 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

  1. 31 Oct 2026, 14:17 UTC First seen by agentprime
  2. 31 Oct 2026, 14:17 UTC Confirmed by OSV

Sources

Facts on this page come from the GitHub Advisory Database (CC-BY 4.0), OSV and the other sources listed, as published. We don’t reproduce full advisory descriptions, which can contain exploit code.