tomdever wpForo Forum Plugin up to 3.2.2 on WordPress Secondary Groupids Authorization Guard classes/Members.php Members::update secondary_groupids privileges management

Summaryinfo

A vulnerability, which was classified as critical, has been found in tomdever wpForo Forum Plugin up to 3.2.2. Impacted is the function Members::update of the file classes/Members.php of the component Secondary Groupids Authorization Guard. The manipulation of the argument secondary_groupids leads to privileges management. This vulnerability is listed as CVE-2026-119164. The attack may be initiated remotely. There is no available exploit.

Detailsinfo

A vulnerability was found in tomdever wpForo Forum Plugin up to 3.2.2. It has been rated as critical. This issue affects the function Members::update of the file classes/Members.php of the component Secondary Groupids Authorization Guard. The manipulation of the argument secondary_groupids with an unknown input leads to a privileges management vulnerability. Using CWE to declare the problem leads to CWE-269. The product does not properly assign, modify, track, or check privileges for an actor, creating an unintended sphere of control for that actor. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

The wpForo Forum plugin for WordPress is vulnerable to Privilege Escalation in all versions up to, and including, 3.2.2 via the `data[secondary_groupids]` parameter of the `wpforo_action_profile_update` POST handler. This is due to a type-confusion flaw in the secondary_groupids authorization guard within the `Members::update()` function in `classes/Members.php`, where casting a scalar CSV string (e.g. `"0,1"`) with `(array)` before `array_map('intval', …)` and `array_filter()` produces an empty array — causing the guard's outer conditional, and the else-branch that would otherwise strip the field from the update, to be bypassed entirely — while `encode()`/`decode()` downstream correctly explodes the original CSV and persists the attacker-supplied group IDs to `wp_wpforo_profiles.secondary_groupids`. This makes it possible for authenticated attackers, with Subscriber-level access and above, to escalate their forum privileges to wpForo Administrator by injecting the privileged Admin group ID, granting access to the Forum Accesses editor and the ability to rewrite forum-wide capability policies for all members and edit arbitrary content owned by other users. Exploitation requires the attacker to have at least 3 approved wpForo posts to satisfy the plugin's default `min_number_posts_to_edit_account` antispam gate, along with a valid wpforo nonce obtained from their own account profile form.

It is possible to read the advisory at wordfence.com. The identification of this vulnerability is CVE-2026-119164 since 10/29/2026. The exploitation is known to be easy. The attack may be initiated remotely. Technical details of the vulnerability are known, but there is no available exploit. The pricing for an exploit might be around USD $0-$5k at the moment (estimation calculated on 11/07/2026). The attack technique deployed by this issue is T1068 according to MITRE ATT&CK.

By approaching the search of inurl:classes/Members.php it is possible to find vulnerable targets with Google Hacking.

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-2026-119037). Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

Type

• WordPress Plugin

Vendor

• tomdever

Name

• wpForo Forum Plugin

Version

• 3.2.0
• 3.2.1
• 3.2.2

CPE 2.3info

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CPE 2.2info

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Be aware that VulDB is the high quality source for vulnerability data.

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