# CVE-2026-85975: Progress MarkLogic Server cleartext S3 transport default

Source: https://junglewise.ai/threats/cve-2026-85975-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-2026-85975 · Severity: high · CVSS 7.5 · Published 2026-10-12

Progress MarkLogic Server, a database platform used for content management and search, may use unencrypted connections to Amazon S3 storage by default. An attacker positioned on the network could intercept sensitive data or cloud storage credentials transmitted during these connections, potentially gaining unauthorized access to stored documents or data.

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

## Quick answers

**Is CVE-2026-85975 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-85975 being exploited in the wild.

**How severe is CVE-2026-85975?** High severity, with a CVSS score of 7.5, 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-2026-85975?** 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-2026-85975 attacked?** It is attacked over the network, in a software library.

**Am I affected by CVE-2026-85975?** 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

MarkLogic Server 11.x and 12.x versions default to cleartext (HTTP) rather than encrypted (HTTPS) transport when connecting to Amazon S3. A network-positioned attacker can intercept credentials and data in transit via man-in-the-middle attack. The vulnerability affects versions prior to 11.3.7 and 12.1.0.

## 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 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)
- [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)