Vulnerability in tomdever wpForo Forum

[ Description ]Official description

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.

[ Fixes ]Fixes and patches

No fix or interim patch is linked from our sources yet. Check the vendor references below and limit exposure of affected systems until a fix is available.

[ References ]References

• plugins.trac.wordpress.org/browser/wpforo/tags/3.1.5/classes/Actions.php
• plugins.trac.wordpress.org/browser/wpforo/tags/3.1.5/classes/Forms.php
• plugins.trac.wordpress.org/browser/wpforo/tags/3.1.5/classes/Forms.php
• plugins.trac.wordpress.org/browser/wpforo/tags/3.1.5/classes/Members.php
• plugins.trac.wordpress.org/browser/wpforo/tags/3.1.5/classes/Members.php
• plugins.trac.wordpress.org/changeset
• www.wordfence.com/threat-intel/vulnerabilities/id/15dc1661-793a-43dd-8a12-8f51da6cb304