Vulnerability in wpForo Forum — CVE-2026-91092

What to do now

Update wpForo Forum to 3.1.6 or later.

Affected versions

• Everything up to and including 3.1.5

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.

This description is reproduced verbatim from the public vulnerability record.

• https://plugins.trac.wordpress.org/browser/wpforo/tags/3.1.5/classes/Actions.php#L806
• https://plugins.trac.wordpress.org/browser/wpforo/tags/3.1.5/classes/Members.php#L3704
• https://plugins.trac.wordpress.org/browser/wpforo/tags/3.1.5/classes/Posts.php#L319
• https://plugins.trac.wordpress.org/browser/wpforo/tags/3.1.5/includes/functions.php#L2820
• https://plugins.trac.wordpress.org/browser/wpforo/tags/3.1.5/includes/hooks.php#L1004
• https://plugins.trac.wordpress.org/changeset?reponame=&old=3702319%40wpforo&new=3702319%40wpforo

This page is compiled automatically from public databases. Accuracy is not guaranteed; confirm against the vendor advisory before acting.