GitHub Advisoryadvisory · Maven
GHSA-4gv3-mc9p-5wqc Keycloak: Unauthenticated account takeover via reset-credentials flow bypass
CRITICAL
Official page ↗
- Aliases
- CVE-2026-18963
- Ecosystem
- Maven
- Packages
- org.keycloak:keycloak-services
- Severity
- Critical
- CVSS vector
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
- Weaknesses
- CWE-640
- Reviewed
- 2026-08-28
Affected packages
• Maven org.keycloak:keycloak-services: >= 26.0.0, < 26.4.15 → fixed in 26.4.15
• Maven org.keycloak:keycloak-services: >= 26.5.0, < 26.6.6 → fixed in 26.6.6
• Maven org.keycloak:keycloak-services: >= 26.7.0, < 26.7.2 → fixed in 26.7.2
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.
Related
Alias · CVE (1)
- CVE-2026-18963 A flaw was found in the reset-credentials flow of the keycloak-services component, which is the core engine for identity and access… vulnerability
Weakness · CWE (1)
- CWE-640 Weak Password Recovery Mechanism for Forgotten Password weakness
References
- https://nvd.nist.gov/vuln/detail/CVE-2026-18963 advisory
- https://github.com/keycloak/keycloak/issues/51833 web
- https://github.com/keycloak/keycloak/pull/51844 web
- https://github.com/keycloak/keycloak/commit/dc2d4e524b4dae85aedc87ca28b9e4fa567d56c1 web
- https://access.redhat.com/errata/RHSA-2026:56519 web
- https://access.redhat.com/errata/RHSA-2026:56520 web
- https://access.redhat.com/errata/RHSA-2026:56523 web
- https://access.redhat.com/errata/RHSA-2026:56524 web
- https://access.redhat.com/security/cve/CVE-2026-18963 web
- https://bugzilla.redhat.com/show_bug.cgi?id=2511595 web
- https://github.com/keycloak/keycloak package