CVE-2026-6292
MediumCVSS 4.3Exploitation Probability (EPSS)
Low risk7th percentile — higher than 7% of all known CVEs
Summary
The MP Customize Login Page plugin for WordPress is vulnerable to Cross-Site Request Forgery (CSRF) in all versions up to and including 1.0. The issue arises from broken nonce validation in the enter_mpclp_login_options() function, allowing unauthorized attackers to modify plugin settings.
Risk Assessment
Attackers can trick a logged-in administrator into submitting a crafted request, enabling them to change plugin settings such as login page background and button colors. This poses a significant security risk to the website.
Recommendation
It is recommended to update the plugin to the latest version to mitigate the vulnerability. Additionally, implement proper capability checks for the settings update handler.
Original NVD description (English source)
The MP Customize Login Page plugin for WordPress is vulnerable to Cross-Site Request Forgery (CSRF) in all versions up to and including 1.0. This is due to a completely broken nonce validation in the enter_mpclp_login_options() function, which contains an inverted check (if wp_verify_nonce(...) { return false; }) and is missing the required action parameter for wp_verify_nonce(). As a result, the nonce check is effectively dead code: it never blocks malicious requests because a CSRF-supplied empty/invalid nonce always returns false, satisfying the inverted condition to continue execution. Furthermore, the settings-update handler is hooked on init without any capability check. This makes it possible for unauthenticated attackers to modify all plugin setting, including login page background, logo URL, image dimensions, button colors, and login message, by tricking a logged-in administrator into submitting a crafted request.