CVE-2026-17526
CVE-2026-17526
Keycloak is an open-source identity and access management solution. A vulnerability was discovered where a user with the impersonation role can impersonate a realm administrator. This allows the attacker to gain full administrative control over the realm, including the ability to manage users, clients, and roles.
Vulnerability class: Broken Access Control
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.2 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.006 (50.0th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 50th percentile — 50.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.005 · newest: 0.006 · change: +0.002
Weakness classification (CWE)
References
- access.redhat.com/errata/RHSA-2026:68276 (vendor-advisory)
- access.redhat.com/errata/RHSA-2026:68277 (vendor-advisory)
- access.redhat.com/errata/RHSA-2026:68278 (vendor-advisory)
- access.redhat.com/errata/RHSA-2026:68280 (vendor-advisory)
- access.redhat.com/security/cve/CVE-2026-17526 (vdb-entry)
- bugzilla.redhat.com/show_bug.cgi (issue-tracking)
Frequently asked questions
- What is CVE-2026-17526?
- CVE-2026-17526 is a high-severity vulnerability, classified under Missing Authorization. CVSS score: 7.2/10. Published 2026-09-16.
- How severe is CVE-2026-17526?
- High severity. CVSS v3 base score is 7.2 out of 10.