All vulnerabilities
CVE-2026-9191

Insufficient isolation of user-supplied code in Progress MarkLogic Server

Progress Software Corporation MarkLogic Server
Open in ThreatlineRecord JSON
CVSS
9.6Critical
ExploitationNo known exploitationNot in CISA KEV, which does not prove it is unexploitedCISA KEV
Exploit odds (EPSS)0.21%Chance of exploitation activity in the next 30 days, higher than 10% of CVEs. Scored 23 Oct 2026FIRST EPSS
Fixed in11.3.7Also 12.1.0CVE List
Published12 Oct 2026Updated 14 Oct 2026CVE List

What fixes it

A fixed version on one release line is not the upgrade target for every line. Check your exact version and any vendor backports.

Description

Progress MarkLogic Server 12.x releases before 12.1.0 and 11.x releases before 11.3.7 do not sufficiently isolate user-supplied code executed through certain REST and XDBC evaluation paths from HTTP request, response, and session state. An attacker able to execute code through an affected path could perform unauthorized actions or compromise an authenticated session.

Text from CVE List

Affected versions 2

  • MarkLogic Serveraffected: 11.0.0 before 11.3.7CVE List
  • MarkLogic Serveraffected: 12.0.0 before 12.1.0CVE List

References 1