CVE-2025-66108 WordPress TNC Toolbox: Web Performance plugin <= 2.0.4 - Broken Access Control vulnerability
Attackers can bypass access controls in the TNC Toolbox WordPress plugin to perform unauthorized actions.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2025-66108?
CVE-2025-66108 is a medium-severity missing authorization vulnerability in Merlot Digital (by TNC) TNC Toolbox: Web Performance, published on 21 Nov 2025. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
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.
Weakness: CWE-862
Which versions are affected by CVE-2025-66108?
How do I fix CVE-2025-66108?
No fix has been published for CVE-2025-66108 yet. Limit exposure of the affected software until one is available.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2025-66108 being exploited?
There is no known exploitation of CVE-2025-66108 in the wild and no public exploit code.
Sources
Also known as GHSA-7ppm-7xh4-78w9.