CVE-2026-88959

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.

References

• https://gist.github.com/bozorovab2009-spec/57931237f774b78333f8fe47e84ec4aa
• https://github.com/anchorcms/anchor-cms
• https://github.com/anchorcms/anchor-cms/blob/0.12.7/anchor/routes/users.php
• https://www.vulncheck.com/advisories/anchor-cms-through-0.12.7-privilege-escalation-via-missing-authorization-on-admin-user-management-endpoints