Progress MarkLogic Server 12.x releases before 12.1.0 and 11.x releases before 11.3.7 contain an authentication validation weakness that could allow an attacker to use a token that should not be accepted by the affected server, which could result in unauthorized access.
https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-97680
https://community.progress.com/s/article/Marklogic-Critical-Security-Alert-Bulletin-October-2026