CVE-2025-66108 MEDIUM

CVE-2025-66108: WordPress TNC Toolbox: Web Performance plugin <= 2.0.4 - Broken Access Control vulnerability

Vendor Merlot Digital (By Tnc)
Product TNC Toolbox: Web Performance
Weakness CWE-862 · Missing authorization
Published November 21, 2025
Last update April 28, 2026
View on NVD All CVEs

CVSS base score

4.3/10
Attack vector Network
Attack complexity Low
Privileges required Low
User interaction None
Confidentiality None
Integrity Low

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N

What the vulnerability does

01Description

Missing Authorization vulnerability in Merlot Digital (by TNC) TNC Toolbox: Web Performance tnc-toolbox allows Exploiting Incorrectly Configured Access Control Security Levels.This issue affects TNC Toolbox: Web Performance: from n/a through <= 2.0.4.

Explanation of Vulnerability in Simple Terms

02Summary

TNC Toolbox: Web Performance versions 2.0.4 and earlier contain an authorization bypass that allows authenticated users with low privileges to modify data they should not have access to. The vulnerability requires a valid user account but no special interaction. Site administrators should update to a version newer than 2.0.4 to prevent unauthorized data modification.

What an attacker can do

03Attacker Capabilities

Modify data or settings they should not have permission to change.

Potential impact on your site

04Site Impact

Authenticated users can alter site data or configuration beyond their assigned permissions.

Conditions required to exploit

05Prerequisites

Attacker must have a valid low-privilege user account on the site.

Key dates

06Disclosure timeline

November 21, 2025 CVE published
April 28, 2026 Record updated