---
id: CVE-2026-85973
title: >-
  Progress MarkLogic Server 12.x releases before 12.1.0 may use cleartext
  transport for certain cluster-management communications
summary: >-
  Progress MarkLogic Server 12.x releases before 12.1.0 may use cleartext
  transport for certain cluster-management communications. A network-positioned
  attacker could intercept or modify information transmitted through an affected
  connection.
severity: high
cvss: 7.4
cvssVector: 'CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N'
cwe:
  - CWE-319
published: '2026-10-12'
updated: '2026-10-12'
sourceUpdated: '2026-10-12T17:17:38.000'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-85973'
references:
  - url: >-
      https://community.progress.com/s/article/Marklogic-Critical-Security-Alert-Bulletin-October-2026
    label: security@progress.com
tags:
  - nvd
ingestedAt: '2026-10-12T18:00:08.223Z'
---

## Overview

Progress MarkLogic Server 12.x releases before 12.1.0 may use cleartext transport for certain cluster-management communications. A network-positioned attacker could intercept or modify information transmitted through an affected connection.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.