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. Red Hat has released updated images and packages for Keycloak 26.4.15 to address this issue. The vulnerability impacts deployments using the Red Hat build of Keycloak for OpenShift Container Platform and standalone installations. Users are advised to back up their installations before applying the update.
AI Analysis
Technical Summary
Red Hat build of Keycloak 26.4.15 contains a critical vulnerability identified as CVE-2026-18963, which allows unauthenticated account takeover by bypassing the reset-credentials flow. This flaw affects the authentication server component used for centralized login, logout, and user account management for web, mobile, and RESTful applications. Red Hat has released new images and packages for Keycloak 26.4.15 to fix this vulnerability. The advisory covers both the standalone product and containerized images for OpenShift deployments.
Potential Impact
The vulnerability enables unauthenticated attackers to take over user accounts by bypassing the reset-credentials mechanism, potentially compromising authentication and access control for applications relying on Keycloak. This could lead to unauthorized access to sensitive resources managed by the affected Keycloak server.
Mitigation Recommendations
Red Hat has released updated images and packages for Red Hat build of Keycloak 26.4.15 that address this vulnerability. Users should back up their existing installations, including applications, configuration files, and databases, before applying the update. Applying the official update from Red Hat is the recommended remediation. No alternative mitigations or workarounds are specified 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. Red Hat has released updated images and packages for Keycloak 26.4.15 to address this issue. The vulnerability impacts deployments using the Red Hat build of Keycloak for OpenShift Container Platform and standalone installations. Users are advised to back up their installations before applying the update.
Affected software
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
Red Hat build of Keycloak 26.4.15 contains a critical vulnerability identified as CVE-2026-18963, which allows unauthenticated account takeover by bypassing the reset-credentials flow. This flaw affects the authentication server component used for centralized login, logout, and user account management for web, mobile, and RESTful applications. Red Hat has released new images and packages for Keycloak 26.4.15 to fix this vulnerability. The advisory covers both the standalone product and containerized images for OpenShift deployments.
Potential Impact
The vulnerability enables unauthenticated attackers to take over user accounts by bypassing the reset-credentials mechanism, potentially compromising authentication and access control for applications relying on Keycloak. This could lead to unauthorized access to sensitive resources managed by the affected Keycloak server.
Mitigation Recommendations
Red Hat has released updated images and packages for Red Hat build of Keycloak 26.4.15 that address this vulnerability. Users should back up their existing installations, including applications, configuration files, and databases, before applying the update. Applying the official update from Red Hat is the recommended remediation. No alternative mitigations or workarounds are specified 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
- State
- PUBLISHED
Threat ID: 6a85b4a3acd9273b49250760
Added to database: 08/19/2026, 13:50:27 UTC
Last enriched: 09/11/2026, 09:16:52 UTC
Last updated: 10/02/2026, 02:46:03 UTC
Views: 80
Community Reviews
0 reviewsCrowdsource mitigation strategies, share intel context, and vote on the most helpful responses. Sign in to add your voice and help keep defenders ahead.
Want to contribute mitigation steps or threat intel context? Sign in or create an account to join the community discussion.
Actions
Updates to AI analysis require Pro Console access. Upgrade inside Console → Billing.
Need more coverage?
Upgrade to Pro Console for AI refresh and higher limits.
For incident response and remediation, OffSeq services can help resolve threats faster.
Latest Threats
Check if your credentials are on the dark web
Instant breach scanning across billions of leaked records. Free tier available.