---
id: CVE-2026-88959
title: >-
  Anchor CMS through 0.12.7 Privilege Escalation via Missing Authorization on
  Admin User-Management Endpoints
summary: >-
  Anchor CMS through 0.12.7 fails to enforce role-based access control in admin
  user-management endpoints, allowing any authenticated low-privilege user to
  create administrator accounts or modify existing ones. Attackers with editor
  or use…
severity: high
cvss: 8.8
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H'
cvssSource: cna
cwe:
  - CWE-862
vendor: anchorcms
product: anchorcms/anchor-cms
affected:
  - anchorcms/anchor-cms <= 0.12.7
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: total
  timestamp: '2026-09-11T18:26:05.623455Z'
published: '2026-09-10'
updated: '2026-09-11'
sourceUpdated: '2026-09-11T20:33:23.175Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-88959'
references:
  - url: >-
      https://gist.github.com/bozorovab2009-spec/57931237f774b78333f8fe47e84ec4aa
    label: Anchor CMS 0.12.7 - Missing Authorization / Privilege Escalation
  - url: >-
      https://github.com/anchorcms/anchor-cms/blob/0.12.7/anchor/routes/users.php
    label: anchor/routes/users.php at 0.12.7
  - url: 'https://github.com/anchorcms/anchor-cms'
    label: Product
  - url: >-
      https://www.vulncheck.com/advisories/anchor-cms-through-0.12.7-privilege-escalation-via-missing-authorization-on-admin-user-management-endpoints
    label: >-
      VulnCheck Advisory: Anchor CMS through 0.12.7 Privilege Escalation via
      Missing Authorization on Admin User-Management Endpoints
tags:
  - cve.org
epss: 0.00289
epssPercentile: 0.21752
ingestedAt: '2026-09-14T11:11:19.881Z'
---

## Overview

Anchor CMS through 0.12.7 fails to enforce role-based access control in admin user-management endpoints, allowing any authenticated low-privilege user to create administrator accounts or modify existing ones. Attackers with editor or user roles can POST directly to admin/users/add or admin/users/edit endpoints to create new administrator accounts or change the existing administrator's password, gaining full administrative access.

## Affected

- `anchorcms/anchor-cms <= 0.12.7`

## Remediation

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