Red Hat Security Advisory: Red Hat build of Keycloak 26.4.15 Images Security Update
A critical security vulnerability (CVE-2026-18963) affects Red Hat build of Keycloak 26.4.15, allowing unauthenticated attackers to take over accounts by bypassing the reset-credentials flow. Keycloak is a standalone server providing authentication and single sign-on capabilities for web and mobile applications. This vulnerability enables an attacker to reset credentials without proper authentication, leading to account takeover.
AI Analysis
Technical Summary
The vulnerability identified as CVE-2026-18963 in Red Hat build of Keycloak 26.4.15 involves an unauthenticated account takeover via a bypass of the reset-credentials flow. This flaw allows attackers to reset user credentials without authentication, compromising account security. The issue is categorized under CWE-640 (Weak Password Recovery Mechanism). Red Hat has issued a security advisory (RHSA-2026:56520) addressing this critical issue.
Potential Impact
Exploitation of this vulnerability allows an unauthenticated attacker to take over user accounts by bypassing the reset-credentials process. This compromises the authentication mechanism of Keycloak, potentially leading to unauthorized access to protected web and mobile applications relying on Keycloak for single sign-on.
Mitigation Recommendations
Red Hat has released an updated package for Keycloak 26.4.15 to address this vulnerability. Users should back up their existing installations, including applications, configuration files, and databases, before applying the update. Applying the official security update from Red Hat is the recommended mitigation. No other temporary fixes or workarounds are provided in the advisory.
Red Hat Security Advisory: Red Hat build of Keycloak 26.4.15 Images Security Update
Description
A critical security vulnerability (CVE-2026-18963) affects Red Hat build of Keycloak 26.4.15, allowing unauthenticated attackers to take over accounts by bypassing the reset-credentials flow. Keycloak is a standalone server providing authentication and single sign-on capabilities for web and mobile applications. This vulnerability enables an attacker to reset credentials without proper authentication, leading to account takeover.
Affected software
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The vulnerability identified as CVE-2026-18963 in Red Hat build of Keycloak 26.4.15 involves an unauthenticated account takeover via a bypass of the reset-credentials flow. This flaw allows attackers to reset user credentials without authentication, compromising account security. The issue is categorized under CWE-640 (Weak Password Recovery Mechanism). Red Hat has issued a security advisory (RHSA-2026:56520) addressing this critical issue.
Potential Impact
Exploitation of this vulnerability allows an unauthenticated attacker to take over user accounts by bypassing the reset-credentials process. This compromises the authentication mechanism of Keycloak, potentially leading to unauthorized access to protected web and mobile applications relying on Keycloak for single sign-on.
Mitigation Recommendations
Red Hat has released an updated package for Keycloak 26.4.15 to address this vulnerability. Users should back up their existing installations, including applications, configuration files, and databases, before applying the update. Applying the official security update from Red Hat is the recommended mitigation. No other temporary fixes or workarounds are provided in the advisory.
Technical Details
- Gcve Source
- db.gcve.eu
- Csaf Category
- csaf_security_advisory
- Csaf Version
- 2.0
- Publisher
- Red Hat Product Security
- Advisory Id
- RHSA-2026:56520
- Cve Count
- 1
- Additional Cves
- []
- Cvss Version
- null
Threat ID: 6a85b4a3acd9273b49250760
Added to database: 08/19/2026, 13:50:27 UTC
Last enriched: 08/19/2026, 13:56:05 UTC
Last updated: 08/19/2026, 19:51:58 UTC
Views: 2
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