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Fencer Vulns
medium 6.5

CVE-2025-14559 json

Org.keycloak/keycloak-services: keycloak keycloak-services: business logic flaw allows unauthorized token issuance for disabled users

published 2026-01-21 9 mo ago modified 2026-09-10 1 mo ago also GHSA-wv3h-x6c4-r867 , EUVD-2026-3686

cvss
6.5
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.5%
EPSS 0.5% chance of exploitation in 30 days, percentile 41%
public exploits
0
none known

Summary

A flaw was found in the keycloak-services component of Keycloak. This vulnerability allows the issuance of access and refresh tokens for disabled users, leading to unauthorized use of previously revoked privileges, via a business logic vulnerability in the Token Exchange implementation when a privileged client invokes the token exchange flow.

Patch / fix

  • maven org.keycloak:keycloak-services 26.4.9, 26.5.2
  • Red Hat Red Hat build of Keycloak 26.4 26.4-10, 26.4-11, 26.4.9-1

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2025-14559 updated cvss 6.5

org.keycloak/keycloak-services: Keycloak keycloak-services: Business logic flaw allows unauthorized token issuance for disabled users

  • Red Hat build of Keycloak 26.4 rhbk/keycloak-rhel9 26.4-11, rhbk/keycloak-rhel9-operator 26.4-10, rhbk/keycloak-operator-bundle 26.4.9-1
    fixed: vendor fix RHSA-2026:2366
  • Red Hat build of Keycloak 26.4.9
    fixed: vendor fix RHSA-2026:2365

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

CISA SSVC

Exploitation
none
Automatable
no
Technical impact
partial
Assessed
9 mo ago

Exploit prediction

0.48% chance of exploitation in the next 30 days, higher than 41% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.1 6.5 CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:N
GitHub 3.1 6.5 CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:N

Affected packages

ecosystem package affected fixed in
maven org.keycloak:keycloak-services
>=26.5.0, <26.5.2
<26.4.9
26.5.2
26.4.9

Affected products

  • Red Hat Red Hat build of Keycloak 26.4
  • Red Hat Red Hat build of Keycloak 26.4.9

Classification

Weakness

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.