# CVE-2026-85968: Progress MarkLogic Server out-of-bounds read in query processing

Source: https://junglewise.ai/threats/cve-2026-85968-progress-marklogic-server-12-x-releases-before-12-1-0-contain-an  
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-2026-85968 · Severity: high · CVSS 7.1 · Published 2026-10-12

Progress MarkLogic Server is a database that stores and searches enterprise data. Versions 12.0.x before 12.1.0 contain a memory reading flaw that allows authenticated attackers to crash the server or leak sensitive information from its memory. An attacker with valid credentials could exploit this to disrupt service or steal confidential data.

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

## Quick answers

**Is CVE-2026-85968 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-85968 being exploited in the wild.

**How severe is CVE-2026-85968?** High severity, with a CVSS score of 7.1, published 12 October 2026.

**Which products and versions are affected?** Progress Marklogic Server 12.0.x before 12.1.0.

**Is there a fix for CVE-2026-85968?** Yes: fixed in MarkLogic Server 12.1.0. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**How is CVE-2026-85968 attacked?** It is attacked over the network, in a software library.

**Am I affected by CVE-2026-85968?** 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

## Technical details

An out-of-bounds read vulnerability exists in the query-processing functionality of MarkLogic Server 12.x prior to 12.1.0. The vulnerability requires authentication and remote network access; an attacker with valid credentials can trigger the flaw through specially crafted queries, leading to server instability or limited information disclosure from process memory.

## Affected products

- Progress MarkLogic Server 12.0.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 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)