CVE-2026-85955 Improper privilege management in Progress MarkLogic Server xdmp:eval-in

Critical 9.9 Published Updated

Remote attackers with query access can bypass privilege checks in MarkLogic Server to execute code with elevated permissions.

Exploited in the wild
Not known
Login needed
Any signed-in user
Attackable
Over the internet
Victim action needed
Not needed
Fix
None listed

What is CVE-2026-85955?

CVE-2026-85955 is a critical vulnerability in Progress Software Corporation MarkLogic Server, published on 12 Oct 2026. Any signed-in user can exploit it over the network, with no action from the victim.

Official description

Progress MarkLogic Server 12.x releases before 12.1.0 and 11.x releases before 11.3.7 allow a remote attacker with query-execution access to invoke an XQuery evaluation function without the additional required evaluation privilege, which could result in server-side code execution with elevated permissions.

Weakness: CWE-269

Which versions are affected by CVE-2026-85955?

How do I fix CVE-2026-85955?

No fix has been published for CVE-2026-85955 yet. Limit exposure of the affected software until one is available.

Is CVE-2026-85955 being exploited?

There is no known exploitation of CVE-2026-85955 in the wild and no public exploit code.

Sources

Also known as GHSA-m226-3jxq-59vc.

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