# CVE-2026-85974: Progress MarkLogic Server TLS hostname validation bypass

Source: https://junglewise.ai/threats/cve-2026-85974-progress-marklogic-server-12-x-releases-before-12-1-0-and-11-x  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-10-12. Updated: 2026-10-16  
License: CC BY 4.0 with a link back

CVE-2026-85974 · Severity: high · CVSS 7.4 · Published 2026-10-12

Progress MarkLogic Server is a NoSQL database platform used to store and manage large-scale data. Versions before 12.1.0 and 11.3.7 fail to properly validate TLS certificate hostnames on outbound connections, allowing a network attacker to intercept or modify communications between the server and other systems. This could lead to unauthorized access to sensitive data or system compromise.

Technologies: [Progress Marklogic Server](https://junglewise.ai/threats/technologies/marklogic-server). Vendors: [Progress](https://junglewise.ai/threats/vendors/progress).

## Quick answers

**Is CVE-2026-85974 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-85974 being exploited in the wild.

**How severe is CVE-2026-85974?** High severity, with a CVSS score of 7.4, published 12 October 2026.

**Which products and versions are affected?** Progress Marklogic Server 11.x before 11.3.7; 12.x before 12.1.0.

**Is there a fix for CVE-2026-85974?** Yes: fixed in MarkLogic Server 11.3.7, 12.1.0. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**How is CVE-2026-85974 attacked?** It is attacked over the network.

**Am I affected by CVE-2026-85974?** 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 11.3.7, 12.1.0

## Technical details

The vulnerability exists in TLS hostname validation logic for outbound connections in MarkLogic Server. A network-positioned attacker can exploit this through a man-in-the-middle attack to spoof services that MarkLogic connects to. The flaw affects versions 12.x before 12.1.0 and 11.x before 11.3.7, and patches are available in the fixed versions.

## Affected products

- Progress MarkLogic Server 11.x before 11.3.7; 12.x before 12.1.0

## Timeline

- 2026-10-12: disclosed

## References

- [https://community.progress.com/s/article/Marklogic-Critical-Security-Alert-Bulletin-October-2026](https://community.progress.com/s/article/Marklogic-Critical-Security-Alert-Bulletin-October-2026)

## Related threats

- [Progress MarkLogic Server HTTP response splitting in Query Console](https://junglewise.ai/threats/cve-2026-85976-progress-marklogic-server-12-x-releases-before-12-1-0-and-11-x)
- [Progress MarkLogic Server cleartext S3 transport default](https://junglewise.ai/threats/cve-2026-85975-progress-marklogic-server-12-x-releases-before-12-1-0-and-11-x)
- [Progress MarkLogic Server cleartext cluster-management communications](https://junglewise.ai/threats/cve-2026-85973-progress-marklogic-server-12-x-releases-before-12-1-0-may-use)
- [Progress MarkLogic Server Kerberos authentication verification bypass](https://junglewise.ai/threats/cve-2026-85972-progress-marklogic-server-12-x-releases-before-12-1-0-and-11-x)
- [Progress MarkLogic Server log file permission disclosure](https://junglewise.ai/threats/cve-2026-85971-progress-marklogic-server-12-x-releases-before-12-1-0-and-11-x)