Vulnerability in Red Hat Single Sign-On 7
CVE-2026-107124
A flaw was found in the OIDC logout endpoint of the keycloak-services component, which handles user session termination in Red Hat Build of Keycloak. The issue occurs because the system sets a session cookie based on an unvalidated token hint before completing security checks. An attacker can use this flaw to fix a session ID in a victim's browser, allowing them to hijack the victim's subsequent login and gain full control over their account.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.4 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:N.
EPSS exploit prediction
No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.
Affected products
Weakness classification (CWE)
References
- RHSA-2026:95761 (vendor-advisory)
- RHSA-2026:95762 (vendor-advisory)
- access.redhat.com/security/cve/CVE-2026-107124 (vdb-entry)
- RHBZ#2547298 (issue-tracking)
Frequently asked questions
- What is CVE-2026-107124?
- CVE-2026-107124 is a medium-severity vulnerability in Red Hat Single Sign-On 7, classified under Session Fixation. CVSS score: 6.4/10. Published 2026-11-06.
- How severe is CVE-2026-107124?
- Medium severity. CVSS v3 base score is 6.4 out of 10.