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4.3 Medium

CVE-2025-10044 A flaw was found in Keycloak

Description

A flaw was found in Keycloak. Keycloak’s account console and other pages accept arbitrary text in the error_description query parameter. This text is directly rendered in error pages without validation or sanitization. While HTML encoding prevents XSS, an attacker can craft URLs with misleading messages (e.g., fake support phone numbers or URLs), which are displayed within the trusted Keycloak UI. This creates a phishing vector, potentially tricking users into contacting malicious actors.

Affected products and versions

Product Affected versions Fixed in
keycloak 26.2 earliest → < 26.2.9 26.2.9
Red Hat build of Keycloak 26.0 26.0 earliest → < 26.0-22 26.0-22
Red Hat build of Keycloak 26.0.17 Versions not published
Red Hat build of Keycloak 26.2 26.2 earliest → < 26.2-9 26.2-9
Red Hat build of Keycloak 26.2.9 Versions not published

References

Timeline

  1. Published
  2. Last modified

Other CVEs of keycloak

The 15 CVEs of keycloak →
CVE-2026-90997 A flaw was found in Keycloak 7.4 High CVE-2026-1609 A flaw was found in Keycloak 8.1 High CVE-2025-12150 A flaw was found in Keycloak’s WebAuthn registration component 3.1 Low CVE-2025-13467 A flaw was found in the Keycloak LDAP User Federation provider 5.5 Medium
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