PT-2026-33825 · WordPress · Wpforo Forum+1

Jude Nwadinobi + 1 · Published 2026-04-20 · Updated 2026-04-27 · CVE-2026-6248

Positive Technologies (AI Summary)

CVSS v3.1

8.1

High

Base vector

AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H

Name of the Vulnerable Software and Affected Versions wpForo Forum versions prior to 3.0.6

Description The plugin is subject to arbitrary file deletion. This occurs because the Members::update() method fails to validate or restrict values for file-type custom profile fields, enabling authenticated users to store arbitrary paths. Additionally, the wpforo fix upload dir() sanitization function within ucf file delete() only remaps paths matching a specific pattern before they are passed to the unlink() function. Authenticated attackers with subscriber-level access or higher can exploit this to delete arbitrary files on the server, which may lead to remote code execution if critical files like 'wp-config.php' are removed. This issue requires the wpForo - User Custom Fields addon plugin to be active.

Recommendations Update to a version newer than 3.0.5.

Fix

Path traversal

Weakness Enumeration

CWE-22

Related Identifiers

CVE-2026-6248

Affected Products

Wpforo - User Custom Fields

Wpforo Forum

References · 8

• https://nvd.nist.gov/vuln/detail/CVE-2026-6248 · Security Note
• https://plugins.trac.wordpress.org/browser/wpforo/tags/2.4.16/wpforo/includes/functions.php#L3187 · Note
• https://twitter.com/integ_sec/status/2048785272175841528 · Twitter Post
• https://plugins.trac.wordpress.org/browser/wpforo/tags/2.4.16/wpforo/classes/Actions.php#L1418 · Note
• https://plugins.trac.wordpress.org/changeset/3509997/wpforo · Note
• https://twitter.com/CVEnew/status/2046571910398636100 · Twitter Post
• https://wordfence.com/threat-intel/vulnerabilities/id/79cc102a-6777-41be-a395-8c2eeb6deb73?source=cve · Note
• https://plugins.trac.wordpress.org/browser/wpforo/tags/2.4.16/wpforo/classes/Members.php#L891 · Note