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Fencer Vulns
low 3.7

CVE-2025-10939 json

Org.keycloak/keycloak-quarkus-server: unable to restrict access to the admin console

published 2025-10-28 12 mo ago modified 2026-10-18 21 d ago also GHSA-vjr8-56p3-fmqq , EUVD-2025-36426

cvss
3.7
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.4%
EPSS 0.4% chance of exploitation in 30 days, percentile 35%
public exploits
0
none known

Summary

A flaw was found in Keycloak. The Keycloak guides recommend to not expose /admin path to the outside in case the installation is using a proxy. The issue occurs at least via ha-proxy, as it can be tricked to using relative/non-normalized paths to access the /admin application path relative to /realms which is expected to be exposed.

Patch / fix

  • maven org.keycloak:keycloak-quarkus-server 26.4.4
  • Keycloak keycloak 26.4.4
  • Red Hat Red Hat build of Keycloak 26.4 26.4-3, 26.4.4-1

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-2025-10939 updated cvss 3.7

org.keycloak/keycloak-quarkus-server: Unable to restrict access to the admin console

  • Red Hat build of Keycloak 26.4 rhbk/keycloak-rhel9 26.4-3, rhbk/keycloak-rhel9-operator 26.4-3, rhbk/keycloak-operator-bundle 26.4.4-1
    fixed: vendor fix RHSA-2025:21371
  • Red Hat build of Keycloak 26.4.4
    fixed: vendor fix RHSA-2025:21370

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
12 mo ago

Exploit prediction

0.41% chance of exploitation in the next 30 days, higher than 35% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.1 3.7 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N
GitHub 3.1 3.7 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N

Affected packages

ecosystem package affected fixed in
maven org.keycloak:keycloak-quarkus-server
<26.4.4
26.4.4

Affected products

  • Keycloak keycloak
  • Red Hat Red Hat build of Keycloak 26.4
  • Red Hat Red Hat build of Keycloak 26.4.4

Classification

Weakness
  • CWE-427 Uncontrolled Search Path Element

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.