Progress MarkLogic Server 12.x releases before 12.1.0 and 11.x releases before 11.3.7 do not consistently validate TLS certificate hostnames for certain outbound connections. A network-positioned attacker could exploit this weakness to intercept or modify communications with an affected service.
https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-97571
https://community.progress.com/s/article/Marklogic-Critical-Security-Alert-Bulletin-October-2026