Vulnerability · Published Sep 10, 2026 · Assigned by VulnCheck
CVE-2026-88959Anchor CMS through 0.12.7 Privilege Escalation via Missing Authorization on Admin User-Management Endpoints
High 8.8
In plain English
A high-severity missing authorization in Anchor CMS from anchorcms. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.5% (higher than 45% of all known vulnerabilities).
Official description
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 products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| anchorcms | Anchor CMS | 0 – through 0.12.7 |
Weakness: CWE-862 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
References
- Anchor CMS 0.12.7 - Missing Authorization / Privilege Escalation third-party-advisory
- anchor/routes/users.php at 0.12.7 technical-description
- Product product
- VulnCheck Advisory: Anchor CMS through 0.12.7 Privilege Escalation via Missing Authorization on Admin User-Management Endpoints third-party-advisory