Vulnerability in Red Hat Build Of Keycloak
CVE-2025-1391
A flaw was found in the Keycloak organization feature, which allows the incorrect assignment of an organization to a user if their username or email matches the organization’s domain pattern. This issue occurs at the mapper level, leading to misrepresentation in tokens. If an application relies on these claims for authorization, it may incorrectly assume a user belongs to an organization they are not a member of, potentially granting unauthorized access or privileges.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.4 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N.
EPSS exploit prediction
EPSS: 0.004 (32.8th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 33rd percentile — 32.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.004 · newest: 0.004 · change: +0.000
Affected products
- Red Hat Build Of Keycloak
- Red Hat Build Of Keycloak 26.0 — versions 26.0.10-3, 26.0-11, 26.0-12
Weakness classification (CWE)
References
- access.redhat.com/errata/RHSA-2025:2544 (vendor-advisory)
- access.redhat.com/errata/RHSA-2025:2545 (vendor-advisory)
- access.redhat.com/security/cve/CVE-2025-1391 (vdb-entry)
- bugzilla.redhat.com/show_bug.cgi (issue-tracking)
- github.com/keycloak/keycloak/issues/37169
- github.com/keycloak/keycloak/pull/37235
Frequently asked questions
- What is CVE-2025-1391?
- CVE-2025-1391 is a medium-severity vulnerability in Red Hat Build Of Keycloak, classified under Improper Access Control. CVSS score: 5.4/10. Published 2025-02-17.
- How severe is CVE-2025-1391?
- Medium severity. CVSS v3 base score is 5.4 out of 10.