# CVE-2026-85959: Progress MarkLogic Server audit log missing authentication events

Source: https://junglewise.ai/threats/cve-2026-85959-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-2026-85959 · Severity: high · CVSS 7.5 · Published 2026-10-12

Progress MarkLogic Server, a document database used for enterprise data management, fails to consistently record successful login attempts in its audit logs. This gap in logging prevents organizations from detecting unauthorized access, credential misuse, or suspicious account activity, hindering security investigations and compliance audits.

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

## Quick answers

**Is CVE-2026-85959 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-85959 being exploited in the wild.

**How severe is CVE-2026-85959?** High severity, with a CVSS score of 7.5, 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-2026-85959?** 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-2026-85959 attacked?** It is attacked over the network, in a software library.

**Am I affected by CVE-2026-85959?** 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 a logging and audit deficiency where MarkLogic Server versions 12.x before 12.1.0 and 11.x before 11.3.7 do not consistently record successful authentication events to audit logs. This is a detection evasion issue requiring network access to the database; an attacker with valid credentials could perform unauthorized activities without leaving a complete audit trail, impacting forensic capabilities.

## Affected products

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

## 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 TLS hostname validation bypass](https://junglewise.ai/threats/cve-2026-85974-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)