Auth bypass in Red Hat Build Of Keycloak
CVE-2025-3910
A flaw was found in Keycloak. The org.keycloak.authorization package may be vulnerable to circumventing required actions, allowing users to circumvent requirements such as setting up two-factor authentication.
Vulnerability class: Broken Authentication
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.4 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N.
EPSS exploit prediction
EPSS: 0.004 (36.1th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 36th percentile — 36.1% 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 26.0.11-2, 26.0-12, 26.0-13
- Red Hat Build Of Keycloak
Weakness classification (CWE)
References
- access.redhat.com/errata/RHSA-2025:4335 (vendor-advisory, Vendor Advisory)
- access.redhat.com/errata/RHSA-2025:4336 (vendor-advisory, Vendor Advisory)
- access.redhat.com/security/cve/CVE-2025-3910 (vdb-entry, Vendor Advisory)
- bugzilla.redhat.com/show_bug.cgi (issue-tracking, Vendor Advisory)
- github.com/keycloak/keycloak/issues/39349 (Issue Tracking)
Frequently asked questions
- What is CVE-2025-3910?
- CVE-2025-3910 is a medium-severity vulnerability in Red Hat Build Of Keycloak, classified under Improper Authentication. CVSS score: 5.4/10. Published 2025-04-29.
- How severe is CVE-2025-3910?
- Medium severity. CVSS v3 base score is 5.4 out of 10.