---
id: CVE-2026-88415
title: MCMS 6.1.1 through 6.2.1 is vulnerable to stored Cross-Site Scripting (XSS)
summary: >-
  MCMS 6.1.1 through 6.2.1 is vulnerable to stored Cross-Site Scripting (XSS).
  The article content field `contentDetails` is excluded from the global XSS
  filter.
severity: high
cvss: 8.7
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N'
cwe:
  - CWE-79
published: '2026-09-22'
updated: '2026-09-23'
sourceUpdated: '2026-09-23T15:17:23.557'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-88415'
references:
  - url: 'https://github.com/15536818056/CVE/issues/2'
    label: cve@mitre.org
  - url: 'https://github.com/15536818056/CVE/issues/2'
    label: 134c704f-9b21-4f2e-91b3-4a467353bcc0
tags:
  - nvd
  - cve.org
  - exploit-available
exploitAvailable: true
ssvc:
  exploitation: poc
  automatable: 'no'
  technicalImpact: total
  timestamp: '2026-09-23T14:55:04.932227Z'
epss: 0.00306
epssPercentile: 0.20794
ingestedAt: '2026-09-22T19:09:09.994Z'
---

## Overview

MCMS 6.1.1 through 6.2.1 is vulnerable to stored Cross-Site Scripting (XSS). The article content field `contentDetails` is excluded from the global XSS filter.

## Remediation

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