CVE-2026-8709: Progress Marklogic Server

Critical severity, CVSS 9.9. EPSS: 0.5% chance of exploitation in the next 30 days.

An improper privilege management vulnerability in the REST API document patch operation of Progress MarkLogic Server before 11.3.6 and 12.0.3 allows an authenticated user with a low-privileged REST role to escalate privileges and execute privileged operations against the Security database.

Affected products

• Progress Marklogic Server: before 11.3.6 (fixed in 11.3.6); from 12.0.0, before 12.0.3 (fixed in 12.0.3)

Published 2026-08-05. Last modified 2026-09-03.