CVE-2026-75977 Mang Board WP <= 2.3.7 - Authenticated (Subscriber+) Privilege Escalation to Forged Authentication Cookie
Authenticated subscribers can forge admin cookies and reset admin passwords to achieve full site takeover in the Mang Board WP plugin.
- 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-2026-75977?
CVE-2026-75977 is a high-severity vulnerability in kitae-park Mang Board WP, published on 26 Aug 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
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.
Weakness: CWE-269
Which versions are affected by CVE-2026-75977?
How do I fix CVE-2026-75977?
No fix has been published for CVE-2026-75977 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-75977 being exploited?
There is no known exploitation of CVE-2026-75977 in the wild and no public exploit code.
Sources
Also known as GHSA-fwqj-5r7m-j49j.