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Vulnerability record · CVE-2026-17526 · published 16 September 2026

CVE-2026-17526: Missing authorization vulnerability

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.

7.2 CVSS 3.1 High EPSS 0.45% · top 63.3% CWE-862 · Missing authorization Awaiting Analysis
7.2CVSS 3.1 base score
0.45%EPSS exploitation probability, 30 days
NoNot in CISA KEV
0Affected product versions listed by NVD
6References
16 Sep 2026Last modified by NVD

Description

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.

CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

References

LinkTags
https://access.redhat.com/errata/RHSA-2026:68276
https://access.redhat.com/errata/RHSA-2026:68277
https://access.redhat.com/errata/RHSA-2026:68278
https://access.redhat.com/errata/RHSA-2026:68280
https://access.redhat.com/security/cve/CVE-2026-17526
https://bugzilla.redhat.com/show_bug.cgi?id=2507409

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Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2026-17526), CISA KEV, FIRST EPSS (scores of 2026-09-28). This page is refreshed as NVD updates the record.