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.
Published: 2026-08-18
Score: 9.1 Critical
EPSS: n/a
KEV: No
Impact: n/a
Action: n/a
AI Analysis

Impact

The flaw exists in the reset‑credentials flow within the Keycloak‑services component, which is the core engine for identity and access management in Red Hat Build of Keycloak. An unauthenticated attacker can trigger the password reset process for any user without the required email verification link. This allows the attacker to set new credentials and gain full control over the target account, compromising confidentiality, integrity, and availability of the affected systems.

Affected Systems

The vulnerability affects Red Hat Build of Keycloak, Red Hat JBoss Enterprise Application Platform Expansion Pack, and Red Hat Single Sign‑On 7. No specific version information is listed in the advisory, so all installed builds of these products should be evaluated for the presence of the fix.

Risk and Exploitability

With a CVSS score of 9.1 the flaw is considered high severity. The EPSS score is not available, and the vulnerability is not listed in the CISA KEV catalog, indicating no confirmed exploitation yet. However, the attack vector is an unauthenticated web request to the reset‑credentials endpoint, which can be performed by anyone with network access to the Keycloak Services component. If exploited, an attacker can take over any user account without user interaction, making this a critical risk for organizations using these Red Hat products.

Generated by OpenCVE AI on August 18, 2026 at 18:54 UTC.

Remediation

Vendor Workaround

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.


OpenCVE Recommended Actions

  • Apply the vendor patch or upgrade to a fixed release of Keycloak, JBoss EAP, or Single Sign‑On that resolves the reset‑credentials flow flaw.
  • Configure Keycloak to enforce email verification for reset‑credentials requests, or add a custom policy that checks for the verification token before allowing the password reset operation.
  • Enable multi‑factor authentication and enforce strong password policies to reduce the effectiveness of stolen credentials.
  • No official Red Hat workaround is available; existing options do not meet security criteria.

Generated by OpenCVE AI on August 18, 2026 at 18:54 UTC.

Tracking

Sign in to view the affected projects.

Advisories

No advisories yet.

History

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'}


Subscriptions

Redhat Build Keycloak Jbosseapxp Red Hat Single Sign On
cve-icon MITRE

Status: PUBLISHED

Assigner: redhat

Published:

Updated: 2026-08-18T17:05:07.478Z

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: 2026-08-18T17:16:57.083

Link: CVE-2026-18963

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

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

Weaknesses
  • CWE-640

    Weak Password Recovery Mechanism for Forgotten Password