Progress MarkLogic Server 12.x releases before 12.1.0 and 11.x releases before 11.3.7 contain an XQuery injection flaw in a deprecated Management API package path. A remote attacker with manage-user-level privileges could exploit this flaw to obtain persistent unauthorized administrative control.
https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-97506
https://community.progress.com/s/article/Marklogic-Critical-Security-Alert-Bulletin-October-2026