---
id: CVE-2026-9191
title: >-
  Progress MarkLogic Server 12.x releases before 12.1.0 and 11.x releases before
  11.3.7 do not sufficiently isolate user-supplied code executed through certain
  REST and XDBC evaluation paths from HTTP request, response, and session state
summary: >-
  Progress MarkLogic Server 12.x releases before 12.1.0 and 11.x releases before
  11.3.7 do not sufficiently isolate user-supplied code executed through certain
  REST and XDBC evaluation paths from HTTP request, response, and session state.
  …
severity: critical
cvss: 9.6
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H'
cwe:
  - CWE-346
vendor: Progress Software Corporation
product: MarkLogic Server
affected:
  - marklogic_server >= 11.0.0 < 11.3.7
  - marklogic_server >= 12.0.0 < 12.1.0
published: '2026-10-12'
updated: '2026-10-15'
sourceUpdated: '2026-10-15T16:27:17.070'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-9191'
references:
  - url: >-
      https://community.progress.com/s/article/Marklogic-Critical-Security-Alert-Bulletin-October-2026
    label: security@progress.com
tags:
  - nvd
  - cve.org
epss: 0.00277
epssPercentile: 0.19996
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: total
  timestamp: '2026-10-14T03:59:40.437005Z'
ingestedAt: '2026-10-12T16:57:59.921Z'
---

## Overview

Progress MarkLogic Server 12.x releases before 12.1.0 and 11.x releases before 11.3.7 do not sufficiently isolate user-supplied code executed through certain REST and XDBC evaluation paths from HTTP request, response, and session state. An attacker able to execute code through an affected path could perform unauthorized actions or compromise an authenticated session.

## Remediation

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