CVE-2025-10044 — Keycloak: keycloak error_description injection on error pages
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 …
Published: 2025-09-05 · CVSS: 4.3 · CVSS 3.1
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.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7