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CVE-2025-31420: Privilege Escalation Vulnerability in wpForo Forum

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Overview

A vulnerability, identified as CVE-2025-31420, has been discovered in Tomdever’s wpForo Forum. This vulnerability, categorized as an Incorrect Privilege Assignment issue, could potentially allow an attacker to escalate their privileges within the system. This issue poses a significant risk to web administrators and organizations using versions up to 2.4.2 of the wpForo Forum.

Vulnerability Summary

CVE ID: CVE-2025-31420
Severity: High – 7.6 (CVSS Score)
Attack Vector: Network
Privileges Required: Low
User Interaction: Required
Impact: Escalation of privileges leading to potential system compromise or data leakage

Affected Products

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Product | Affected Versions

wpForo Forum | up to 2.4.2

How the Exploit Works

The vulnerability is triggered when an attacker exercises specific actions within the wpForo Forum system. The software incorrectly assigns privileges during these actions, enabling the attacker to escalate their user permissions. This incorrect privilege assignment could potentially lead to unauthorized access to sensitive data or system compromise if exploited successfully.

Conceptual Example Code

Here is a conceptual example of how this vulnerability could be exploited:

POST /wpForo/escalate HTTP/1.1
Host: target.example.com
Content-Type: application/json
{
"user_action": "some_action",
"user_id": "attacker_id"
}

In the above example, an attacker may use a specific user action to trigger the vulnerability and escalate their privileges.

Mitigation

To mitigate this vulnerability, it is recommended to apply the latest vendor-provided patch. If the patch is unavailable or cannot be applied immediately, using a Web Application Firewall (WAF) or Intrusion Detection System (IDS) can serve as a temporary mitigation strategy. Regularly updating and patching software to the latest versions is a general best practice to maintain system security.

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Disclaimer:

The information and code presented in this article are provided for educational and defensive cybersecurity purposes only. Any conceptual or pseudocode examples are simplified representations intended to raise awareness and promote secure development and system configuration practices.

Do not use this information to attempt unauthorized access or exploit vulnerabilities on systems that you do not own or have explicit permission to test.

Ameeba and its authors do not endorse or condone malicious behavior and are not responsible for misuse of the content. Always follow ethical hacking guidelines, responsible disclosure practices, and local laws.

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