CVE-2026-88959

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    CVE-2026-88959

    Published: 10 Sept 2026Last Modified: 11 Sept 2026

    Summary: Anchor CMS through 0.12.7 Privilege Escalation via Missing Authorization on Admin User-Management Endpoints

    Details: 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/CVEProject/cvelistV5/tree/main/cves/2026/88xxx/CVE-2026-88959.json, https://github.com/anchorcms/anchor-cms, https://github.com/anchorcms/anchor-cms/blob/0.12.7/anchor/routes/users.php, https://nvd.nist.gov/vuln/detail/CVE-2026-88959, https://packagist.org, https://www.vulncheck.com/advisories/anchor-cms-through-0.12.7-privilege-escalation-via-missing-authorization-on-admin-user-management-endpoints

    Affected packages

    Package

    Name:

    Purl:

    Affected ranges

    Type: GIT

    Events:

    Introduced- 0
    Fixed -None

    Affected versions

    0.12.7
    0.12.6
    0.12.3a
    0.12.3
    0.12.1
    0.12

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High
    CVE-2026-88959 | CVE-DB