Description
A flaw was found in the reset-credentials flow of the keycloak-services component, which is the core engine for identity and access management in Red Hat Build of Keycloak. The issue allows an unauthenticated attacker to force the password reset process for any user without needing to click the required email verification link. This can result in the attacker gaining full control over target user accounts by directly setting new credentials.
References7
- access.redhat.com/errata/RHSA-2026:56519
- access.redhat.com/errata/RHSA-2026:56520
- access.redhat.com/errata/RHSA-2026:56523
- access.redhat.com/errata/RHSA-2026:56524
- access.redhat.com/security/cve/CVE-2026-18963
- bugzilla.redhat.com/show_bug.cgi?id=2511595
- cert-portal.siemens.com/productcert/html/ssa-503852.html
Metrics
- CVSS 3.1
-
9.1
CRITICAL
Score source: CNA
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N - EPSS — exploit probability
- 7% percentile: 94 · as of 11 November 2026
- CWE
- CWE-640
Could this be exploited in your environment?
A patch closes the known hole. A penetration test shows what an attacker can still reach — with proof.