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CVE-2026-107889

5.5 medium SSVC exploitation: none Awaiting Analysis
NVD · CVE.org

A flaw was found in the login theme rendering component of Keycloak. The issue occurs because the security filter responsible for cleaning user input can be bypassed, allowing a realm administrator to store malicious scripts in display fields. This could result in unauthorized JavaScript execution in the browsers of users visiting the login page, potentially leading to data exposure or session interference.

Fix

Nothing published yet: no patch, vendor advisory or mitigation reference on NVD, no vendor advisory in the News for this CVE, not in CISA's KEV, no fixed package version. BaselineWatch does not guess at one.

Change history 1

  1. First seenCVSS 5.5NVD modified 2026-10-13 17:17

Affected (CPE criteria) 0

NVD has not attached CPE configurations yet.

References 2