Quick answers
- Is CVE-2026-85955 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-85955 being exploited in the wild.
- How severe is CVE-2026-85955?
- Critical severity, with a CVSS score of 9.9, published 12 October 2026.
- Which products and versions are affected?
- Progress Marklogic Server 12.x before 12.1.0; 11.x before 11.3.7.
- Is there a fix for CVE-2026-85955?
- Yes: fixed in MarkLogic Server 12.1.0, 11.3.7 or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
- How is CVE-2026-85955 attacked?
- It is attacked over the network.
- Am I affected by CVE-2026-85955?
- Check whether you run Progress Marklogic Server at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.
How to fix
- Fixed in: MarkLogic Server 12.1.0, 11.3.7 or later
Technical details
The vulnerability is a privilege escalation in XQuery evaluation functions that fail to enforce required evaluation privileges. An authenticated attacker with query-execution access can invoke XQuery evaluation functions that should require elevated permissions, resulting in remote code execution with administrative privileges. A fix exists in versions 12.1.0 and 11.3.7 or later.
Affected products
- Progress MarkLogic Server 12.x before 12.1.0; 11.x before 11.3.7
Timeline
- 2026-10-12: disclosed