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.
History

Wed, 19 Aug 2026 02:30:00 +0000

Type Values Removed Values Added
CPEs cpe:/a:redhat:build_keycloak:26.4
References

Wed, 19 Aug 2026 00:15:00 +0000

Type Values Removed Values Added
References
Metrics threat_severity

None

threat_severity

Critical


Tue, 18 Aug 2026 21:00:00 +0000

Type Values Removed Values Added
CPEs cpe:/a:redhat:build_keycloak:26.4::el9
cpe:/a:redhat:build_keycloak:26.6::el9
References

Tue, 18 Aug 2026 20:45:00 +0000

Type Values Removed Values Added
CPEs cpe:/a:redhat:build_keycloak: cpe:/a:redhat:build_keycloak:26.6
References

Tue, 18 Aug 2026 17:15:00 +0000

Type Values Removed Values Added
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.
Title Keycloak-services: keycloak-services: unauthenticated account takeover via reset-credentials flow bypass
First Time appeared Redhat
Redhat build Keycloak
Redhat jbosseapxp
Redhat red Hat Single Sign On
Weaknesses CWE-640
CPEs cpe:/a:redhat:build_keycloak:
cpe:/a:redhat:jbosseapxp
cpe:/a:redhat:red_hat_single_sign_on:7
Vendors & Products Redhat
Redhat build Keycloak
Redhat jbosseapxp
Redhat red Hat Single Sign On
References
Metrics cvssV3_1

{'score': 9.1, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N'}


cve-icon MITRE

Status: PUBLISHED

Assigner: redhat

Published:

Updated: 2026-08-19T01:55:47.339Z

Reserved: 2026-08-05T15:00:40.360Z

Link: CVE-2026-18963

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-08-18T17:16:57.083

Modified: 2026-08-19T03:16:52.443

Link: CVE-2026-18963

cve-icon Redhat

Severity : Critical

Publid Date: 2026-08-17T00:00:00Z

Links: CVE-2026-18963 - Bugzilla

cve-icon OpenCVE Enrichment

Updated: 2026-08-18T19:00:12Z