---
id: CVE-2026-9203
title: >-
  A server-side request forgery vulnerability in Progress MarkLogic Server
  before 11.3.6 and 12.0.3 allows an authenticated user with low-privileged
  roles to bypass protections for cloud instance metadata endpoints
summary: >-
  A server-side request forgery vulnerability in Progress MarkLogic Server
  before 11.3.6 and 12.0.3 allows an authenticated user with low-privileged
  roles to bypass protections for cloud instance metadata endpoints. Successful
  exploitation…
severity: high
cvss: 8.5
cvssVector: 'CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H'
cwe:
  - CWE-918
published: '2026-08-05'
updated: '2026-08-28'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-9203'
references:
  - url: >-
      https://community.progress.com/s/article/Marklogic-Critical-Security-Alert-Bulletin-August-2026
    label: security@progress.com
tags:
  - nvd
epss: 0.00214
epssPercentile: 0.12002
ingestedAt: '2026-08-29T16:39:14.222Z'
---

## Overview

A server-side request forgery vulnerability in Progress MarkLogic Server before 11.3.6 and 12.0.3 allows an authenticated user with low-privileged roles to bypass protections for cloud instance metadata endpoints. Successful exploitation can disclose cloud credentials and compromise cloud resources accessible to the host instance.

## Remediation

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