CVE-2026-18963
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
Summary
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.
Affected Software
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| Red Hat | Red Hat build of Keycloak 26.4 | 26.4-23 < * | unaffected |
| Red Hat | Red Hat build of Keycloak 26.4 | 26.4.15-1 < * | unaffected |
| Red Hat | Red Hat build of Keycloak 26.4 | 26.4-23 < * | unaffected |
| Red Hat | Red Hat build of Keycloak 26.6 | 26.6-12 < * | unaffected |
| Red Hat | Red Hat build of Keycloak 26.6 | 26.6.6-1 < * | unaffected |
| Red Hat | Red Hat build of Keycloak 26.6 | 26.6-12 < * | unaffected |
Weaknesses
- CWE-640: Weak Password Recovery Mechanism for Forgotten Password
Workarounds
Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base, or stability.
References
- https://access.redhat.com/errata/RHSA-2026:56519
- https://access.redhat.com/errata/RHSA-2026:56523
- https://access.redhat.com/errata/RHSA-2026:56524
- https://access.redhat.com/security/cve/CVE-2026-18963
- https://bugzilla.redhat.com/show_bug.cgi?id=2511595
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