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Fencer Vulns
medium 5.4

CVE-2025-11429 json

Keycloak-server: too long and not settings compliant session

published 2025-10-23 12 mo ago modified 2026-10-18 21 d ago also GHSA-64w3-5q9m-68xf , EUVD-2025-35689

cvss
5.4
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.2%
EPSS 0.2% chance of exploitation in 30 days, percentile 14%
public exploits
0
none known

Summary

A flaw was found in Keycloak. Keycloak does not immediately enforce the disabling of the "Remember Me" realm setting on existing user sessions. Sessions created while "Remember Me" was active retain their extended session lifetime until they expire, overriding the administrator's recent security configuration change. This is a logic flaw in session management increases the potential window for successful session hijacking or unauthorized long-term access persistence. The flaw lies in the session expiration logic relying on the session-local "remember-me" flag without validating the current realm-level configuration.

Patch / fix

  • maven org.keycloak:keycloak-services 26.2.11, 26.4.1
  • Keycloak keycloak 26.4.1
  • Red Hat Red Hat build of Keycloak 26.2 26.2-12, 26.2.11-1

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-2025-11429 updated cvss 5.4

keycloak-server: Too long and not settings compliant session

  • Red Hat build of Keycloak 26.2 rhbk/keycloak-rhel9 26.2-12, rhbk/keycloak-rhel9-operator 26.2-12, rhbk/keycloak-operator-bundle 26.2.11-1
    fixed: vendor fix RHSA-2025:22088
  • Red Hat build of Keycloak 26.2.11
    fixed: vendor fix RHSA-2025:22089

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

0.24% chance of exploitation in the next 30 days, higher than 14% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.1 5.4 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N
GitHub 3.1 5.4 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N

Affected packages

ecosystem package affected fixed in
maven org.keycloak:keycloak-services
>=26.3.0, <26.4.1
<26.2.11
26.4.1
26.2.11

Affected products

  • Keycloak keycloak
  • Red Hat Red Hat build of Keycloak 26.2
  • Red Hat Red Hat build of Keycloak 26.2.11

Classification

Weakness
  • CWE-613 DEPRECATED: Insufficient Session Expiration

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.