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CVE-2026-88959

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

CVSS 3.1 8.8 HIGHCVSS 4.0 8.7 HIGHCheck source for fixed versionsKEV status unknown

Original advisory

cve-program · CVE-2026-88959

Published

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.

Read the publisher's advisory

Affected versions, risk and source history

cve-program · CVE-2026-88959

Published

anchorcms/anchor-cms

https://packagist.org

Publisher's version information

Shown as published. These rules are not interpreted as NuGet package version ranges.

{
                    "defaultStatus": "unaffected",
                    "vendor": "anchorcms",
                    "product": "Anchor CMS",
                    "packageName": "anchorcms/anchor-cms",
                    "packageURL": "pkg:composer/anchorcms/anchor-cms",
                    "collectionURL": "https://packagist.org",
                    "repo": "https://github.com/anchorcms/anchor-cms",
                    "versions": [
                        {
                            "version": "0",
                            "lessThanOrEqual": "0.12.7",
                            "status": "affected",
                            "versionType": "custom"
                        }
                    ]
                }

Original source record · Cite this exact observation · Complete original publisher JSON