CVE-2026-75977
HighCVSS 8.8Exploitation Probability (EPSS)
Low risk47th percentile - higher than 47% of all known CVEs
Summary
The Mang Board WP plugin for WordPress is vulnerable to Missing Authorization via Authentication Cookie Forgery in all versions up to, and including, 2.3.7. This is due to flawed HMAC generation in the mbw_get_hash_key() function that uses the current user's identity instead of the cookie username parameter when a WordPress user is logged in, combined with insufficient validation in mbw_validate_auth_cookie(). This makes it possible for authenticated attackers, with subscriber-level access and above, to forge administrator authentication cookies and change administrator passwords to achieve complete site takeover.
Risk Assessment
Risk of complete WordPress site takeover by an authenticated low-privileged user, potentially leading to data loss and integrity compromise.
Recommendation
Update the Mang Board WP plugin to the latest version that fixes this vulnerability, and restrict access to low-privileged accounts.
Other vulnerabilities in Mang Board WP
See all- CVE-2026-61974High
The Mang Board WP plugin versions up to 2.3.4 contain a Cross-Site Scripting (XSS) vulnerability that can be exploited without authentication.
- CVE-2026-13334Medium
The Mang Board WP plugin for WordPress is vulnerable to Reflected Cross-Site Scripting via the 'stag' parameter in all versions up to and including 2.3.4 due to insufficient input sanitization and output escaping.
Original NVD description (English source)
The Mang Board WP plugin for WordPress is vulnerable to Missing Authorization via Authentication Cookie Forgery in all versions up to, and including, 2.3.7. This is due to flawed HMAC generation in the mbw_get_hash_key() function that uses the current user's identity instead of the cookie username parameter when a WordPress user is logged in, combined with insufficient validation in mbw_validate_auth_cookie(). This makes it possible for authenticated attackers, with subscriber-level access and above, to forge administrator authentication cookies and change administrator passwords to achieve complete site takeover.