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Advisory record · GHSA-wv3h-x6c4-r867

Keycloak services allows the issuance of access and refresh tokens for disabled users

CVSS 6.5 MediumEPSS 0.0048 · 41st percentile

Published by the GitHub Advisory Database at 21 Jan 2026, 09:31 UTC. agentprime has not analysed this yet, so whether it affects any app is not known.

PackageEcosystemAffectedFixed in
org.keycloak:keycloak-servicesMaven>=26.5.0, <26.5.2 || <26.4.926.5.2, 26.4.9
Identifiers
GHSA-wv3h-x6c4-r867 · CVE-2025-14559
Weakness (CWE)
CWE-840 · CWE-863
Tags
Published
21 Jan 2026
Updated
10 Sept 2026

Machine-written summary

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

Keycloak's keycloak-services component, versions 26.5.0 up to 26.5.2 and versions below 26.4.9, can issue access and refresh tokens for disabled users through its Token Exchange flow when a privileged client invokes it. An attacker who controls such a privileged client could obtain tokens for a disabled account and keep privileges that were revoked. Upgrade keycloak-services to 26.5.2 or 26.4.9.

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
6.5 Medium 3.1 CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:N CNA (redhat)
  • CISA KEV Not listed.
  • EPSS 0.0048, the 41st percentile, on 5 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.