wpForo Forum: Code execution
wpForo Forum is affected by code execution. Exploitation requires at least subscriber-level access. Successful exploitation can run attacker-controlled code in the WordPress hosting account. The published affected range is <= 3.0.5.
- Component
- wpForo Forum
- Plugin slug
wpforo- Affected
- <= 3.0.5
- Safe version
> 3.0.5- Published
- Apr 20, 2026
This CVE was published Apr 20, 2026 and is one of 47 known issues for this plugin.
Update, patch or deactivate.
Update wpForo Forum to a release after 3.0.5, or disable and remove it until a fixed version is available.
A safe version is available, so updating to that version or later is the preferred remediation. If an immediate update is not practical, consider a targeted application patch or temporarily restricting the affected functionality.
Deactivate only when warranted by your risk profile, or when advised by your hosting provider in the limited circumstances where the vulnerability cannot otherwise be mitigated. If you’re unsure which action is appropriate, contact Fused or your hosting provider for guidance.
Technical description
The wpForo Forum plugin for WordPress is vulnerable to Arbitrary File Deletion in versions up to and including 3.0.5. This is due to two compounding flaws: the Members::update() method does not validate or restrict the value of file-type custom profile fields, allowing authenticated users to store an arbitrary path instead of a legitimate upload path; and the wpforo_fix_upload_dir() sanitization function in ucf_file_delete() only remaps paths that match the expected pattern, and it is passed directly to the unlink() function. This makes it possible for authenticated attackers, with subscriber-level access and above, to delete arbitrary files on the server, which can easily lead to remote code execution when the right file is deleted (such as wp-config.php). Note: The vulnerability requires a file custom field, which requires the wpForo - User Custom Fields addon plugin.
CVE / CNA vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H