Security Alert Summary
The RestrictMate WordPress plugin before version 1.3.0 does not restrict the user role supplied during account registration. This allows unauthenticated attackers to create a new administrator account and obtain a logged-in administrator session, which can lead to full site takeover if exploited.
CVE Details
- CVE ID: CVE-2026-13598
- Affected component: RestrictMate WordPress plugin
- Affected versions: Versions before 1.3.0 (less than 1.3.0)
- Published: August 23, 2026 at 6:16:19 AM UTC
- Last modified: August 23, 2026 at 6:16:19 AM UTC
- CVSS v3.1 base score / severity / vector: Not provided in the CVE data
- Authentication / privileges / user interaction: Not provided in CVE CVSS data; the description states the exploit is possible by unauthenticated attackers
- Primary impact: Confidentiality: High (unauthorized access to protected data). Integrity: High (ability to modify site content and settings). Availability: High (attacker could disable or remove site content or services).
- CWE / weakness ID: Not provided
Technical Details
The vulnerability exists because RestrictMate does not restrict or validate the user role supplied during the account registration process. According to the CVE description, an unauthenticated attacker can supply a privileged role value during registration, resulting in the creation of a new account with administrative privileges and a logged-in administrator session. The issue is a failure to enforce server-side role restrictions during account creation.
No specific functions, REST API endpoints, or code paths are named in the provided data. The impact described in the CVE is that successful exploitation results in an administrative account and a logged-in administrator session, which provides the attacker with administrator-level capabilities on the site.
How This Could Impact Your Website
Consider a site with multiple WordPress users: the site owner, internal staff who manage content, and an external contractor who contributes content. If an attacker registers and is able to assign themselves an administrator role, they could access private content, change site settings, install or remove plugins, and manage other user accounts. This could expose internal user email addresses and other data, and increase the risk of targeted phishing or social engineering against staff and contractors. If you’re unsure whether your site is affected or how to assess your current user roles and plugins, it may be worth having a professional review.
Recommended Actions
- Update the affected plugin as soon as a patched version is available.
- Review and reduce unnecessary user roles, especially contributor-level accounts and any untrusted registrations.
- Enforce strong passwords and two-factor authentication for editors and administrators.
- Remove unused or unmaintained plugins from your site.
- Monitor site activity and logs for unusual user creation, privilege changes, or logins from unfamiliar IP addresses.
If you’d like help reviewing your plugins, user roles, or overall WordPress security posture, our team at Freshy is happy to help.
