CVE-2026-19688
CVE-2026-19688
A flaw was found in the Admin REST API of Keycloak, an identity and access management solution. The Admin API fails to verify the intended audience of bearer tokens during authentication. This issue allows an attacker who operates a client within a realm to capture an administrator's access token and reuse it to perform unauthorized administrative actions, potentially leading to full realm compromise.
Vulnerability class: Broken Authentication
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.8 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:H/I:H/A:H.
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.
Weakness classification (CWE)
References
- RHSA-2026:95761 (vendor-advisory)
- RHSA-2026:95762 (vendor-advisory)
- access.redhat.com/security/cve/CVE-2026-19688 (vdb-entry)
- RHBZ#2514534 (issue-tracking)
Frequently asked questions
- What is CVE-2026-19688?
- CVE-2026-19688 is a medium-severity vulnerability, classified under Improper Authentication. CVSS score: 6.8/10. Published 2026-11-06.
- How severe is CVE-2026-19688?
- Medium severity. CVSS v3 base score is 6.8 out of 10.