CVE-2017-12161: Keycloak

High severity, CVSS 8.8. EPSS: 1.3% chance of exploitation in the next 30 days.

It was found that keycloak before 3.4.2 final would permit misuse of a client-side /etc/hosts entry to spoof a URL in a password reset request. An attacker could use this flaw to craft a malicious password reset request and gain a valid reset token, leading to information disclosure or further attacks.

Affected products

• Keycloak Keycloak: before 3.4.2 (fixed in 3.4.2)

Published 2018-02-21. Last modified 2026-06-17.