CVE-2023-6380: Alkacon Opencms

Medium severity, CVSS 6.1. EPSS: 1.6% chance of exploitation in the next 30 days.

Open redirect vulnerability has been found in the Open CMS product affecting versions 14 and 15 of the 'Mercury' template. An attacker could create a specially crafted URL and send it to a specific user to redirect them to a malicious site and compromise them. Exploitation of this vulnerability is possible due to the fact that there is no proper sanitization of the 'URI' parameter.

Affected products

• Alkacon Opencms: from 14.0.0, before 16.0.0 (fixed in 16.0.0)

Published 2023-12-13. Last modified 2026-06-17.