Vulnerability in wpForo Forum — CVE-2026-91092
MediumSeverity
—Estimated exploit probability
20,000+ sitesInstalls
3.1.6Fixed in
What to do now
Update wpForo Forum to 3.1.6 or later.
Affected versions
- Everything up to and including 3.1.5
Affected: wpForo Forum (plugin, wpforo)
What the vulnerability is
The wpForo Forum plugin for WordPress is vulnerable to authorization bypass in all versions up to, and including, 3.1.5. This is due to the plugin not properly verifying that a user is authorized to perform an action. This makes it possible for authenticated attackers, with subscriber-level access and above, to take over another guest author's forum post and modify its title, body, author name, and stored owner email address. This requires that guest posting and editing are enabled on the forum, and that the attacker knows the target guest author's email address.