Vulnerability in wpForo Forum — CVE-2026-93747

What to do now

Update wpForo Forum to 3.1.7 or later.

Affected versions

• Everything up to and including 3.1.6

The wpForo Forum plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'telegram' profile field in versions up to, and including, 3.1.6. This is due to insufficient input sanitization and output escaping in the profile_update action — the raw $_POST['data'] array is copied into a $custom_fields variable before validate() and sanitize() run, both of which operate only on a parallel $user reference, leaving $custom_fields unsanitized when it is persisted via update_custom_fields(); on render, wpforo_decode() reverses the entity encoding and the value is echoed without escaping in field_wrap_profile(). This makes it possible for authenticated attackers, with subscriber-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.

This description is reproduced verbatim from the public vulnerability record.

• https://plugins.trac.wordpress.org/browser/wpforo/tags/3.1.5/classes/Actions.php#L711
• https://plugins.trac.wordpress.org/browser/wpforo/tags/3.1.5/classes/Forms.php#L1074
• https://plugins.trac.wordpress.org/browser/wpforo/tags/3.1.5/classes/Forms.php#L324
• https://plugins.trac.wordpress.org/browser/wpforo/tags/3.1.5/classes/Members.php#L1157
• https://plugins.trac.wordpress.org/browser/wpforo/tags/3.1.5/classes/Members.php#L906
• https://plugins.trac.wordpress.org/changeset?reponame=&old=3706608%40wpforo&new=3706608%40wpforo

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