CVE-2026-37980

No fix known EPSS <1%CVSS 6.9

A flaw was found in Keycloak, specifically in the organization selection login page. A remote attacker with `manage-realm` or `manage-organizations` administrative privileges can exploit a Stored Cross-Site Scripting (XSS) vulnerability. This flaw occurs because the `organization.alias` is placed into an inline JavaScript `onclick` handler, allowing a crafted JavaScript payload to execute in a user's browser when they view the login page. Successful exploitation enables arbitrary JavaScript execution, potentially leading to session theft, unauthorized account actions, or further attacks against users of the affected realm.

Published 2026-04-14 · CVE record · OSV

Products: Red Hat build of Keycloak 26.4.12, Red Hat Build of Keycloak

Fixed upstream

Distro releases