Quick answers
- Is CVE-2026-85976 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-85976 being exploited in the wild.
- How severe is CVE-2026-85976?
- Medium severity, with a CVSS score of 5.4, 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-2026-85976?
- Yes: fixed in MarkLogic Server 12.1.0, 11.3.7. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
- How is CVE-2026-85976 attacked?
- It is attacked over the network, in a software library.
- Am I affected by CVE-2026-85976?
- 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
Technical details
The vulnerability is an HTTP response splitting flaw in the Query Console file-exploration endpoint caused by insufficient input sanitization. An attacker with network access can craft malicious input that injects HTTP headers and response body content, potentially resulting in client-side response handling violations and cache poisoning. The attack requires network access to the Query Console endpoint.
Affected products
- Progress MarkLogic Server 12.x before 12.1.0; 11.x before 11.3.7
Timeline
- 2026-10-12: disclosed