tomdever wpForo Forum Plugin up to 3.2.2 on WordPress Theme Deletion theme_delete wpforo_secondary_groupids path traversal

Summaryinfo

A vulnerability was found in tomdever wpForo Forum Plugin up to 3.2.2 and classified as problematic. This affects the function theme_delete of the component Theme Deletion. Such manipulation of the argument wpforo_secondary_groupids leads to path traversal. This vulnerability is documented as CVE-2026-110004. The attack can be executed remotely. There is not any exploit available.

Detailsinfo

A vulnerability, which was classified as problematic, has been found in tomdever wpForo Forum Plugin up to 3.2.2. Affected by this issue is the function theme_delete of the component Theme Deletion. The manipulation of the argument wpforo_secondary_groupids with an unknown input leads to a path traversal vulnerability. Using CWE to declare the problem leads to CWE-22. The product uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the product does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory. Impacted is confidentiality. CVE summarizes:

The wpForo Forum plugin for WordPress is vulnerable to arbitrary file deletion due to insufficient file path validation in the theme_delete function in all versions up to, and including, 3.2.2 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). This exploit chain is reachable only on sites where an administrator has created a custom wpForo secondary usergroup with a blank WordPress role and the 'mth' (Manage Themes) capability; on such sites, an attacker can self-register and claim that group via the unguarded wpforo_secondary_groupids[] POST field, bypassing the role-based group filter and gaining theme-management access as a Subscriber.

The advisory is available at wordfence.com. This vulnerability is handled as CVE-2026-110004 since 10/13/2026. The exploitation is known to be easy. The attack may be launched remotely. Technical details are known, but there is no available exploit. The structure of the vulnerability defines a possible price range of USD $0-$5k at the moment (estimation calculated on 11/07/2026). This vulnerability is assigned to T1006 by the MITRE ATT&CK project.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2026-119031). If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

Type

• WordPress Plugin

Vendor

• tomdever

Name

• wpForo Forum Plugin

Version

• 3.2.0
• 3.2.1
• 3.2.2

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CPE 2.2info

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Entryinfo

If you want to get best quality of vulnerability data, you may have to visit VulDB.

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