Mang Board WP <= 2.3.7 — Authenticated (Subscriber+) Privilege Escalation to Forged Authentication Cookie

Am I affected?

• Check your version: in wp-admin go to Plugins → Installed Plugins and read the version under Mang Board.
• No admin access? Run a passive check of your site. It reads public files only.

What to do

1. Update to version 2.3.8, or a newer patched version
2. Rotate administrator passwords and application secrets if the site ran a vulnerable version while publicly reachable.
3. Watch Mang Board to get an email when the next vulnerability is published.

Advisory

Source description from Wordfence Intelligence, credited to daroo.

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.

Exploits & references

Proof-of-concept & detection

No public proof-of-concept or detection template is known for this vulnerability.

Advisories & patches

• Advisorywordfence.com

Related CVEs

Timeline

1. Aug 25, 2026

   CVE published

   Severity high, CVSS 8.8

2. Nov 13, 2026

   Record last updated