CVE-2026-42682

Vulnerability

The wpForo Forum plugin for WordPress contains a broken access control vulnerability stemming from missing authorization checks. This flaw exists in versions up to and including 3.0.6 and allows users to trigger functions that should be restricted to higher-privileged accounts [2]. The vulnerability is reachable due to the absence of proper authentication or nonce token validation within sensitive code paths [2].

Exploitation

An attacker does not require special privileges to exploit this vulnerability, as it relies on the lack of server-side authorization checks. By interacting with the affected plugin functions, an unprivileged user can execute actions intended only for administrators or other authorized roles [2]. No specific user interaction beyond triggering the vulnerable request is required, making it suitable for mass-exploit campaigns [2].

Impact

Successful exploitation of this vulnerability allows an attacker to perform unauthorized actions within the forum environment. This can lead to a complete compromise of the forum's access control security levels, potentially resulting in unauthorized data modification, administrative actions, or other high-privilege operations depending on the specific function targeted [2].

Mitigation

Users should update to wpForo Forum version 3.0.7 or later to resolve this vulnerability [2]. If an immediate update is not possible, administrators are advised to consult with their hosting provider or security team to implement temporary mitigation rules to block malicious requests [2].