Author: Ameeba

Overview

CVE-2025-3058 is a critical vulnerability found in the Xelion Webchat plugin for WordPress versions up to and including 9.1.0. This cybersecurity flaw exposes WordPress sites to severe threats, allowing unauthorized modification of data, leading to a potential privilege escalation. This vulnerability is significant because it affects a popular WordPress plugin, placing numerous websites and their users at risk. If exploited, attackers could gain unauthorized administrative access, leading to potential system compromise or data leakage.

Vulnerability Summary

CVE ID: CVE-2025-3058
Severity: High (8.8 CVSS score)
Attack Vector: Network
Privileges Required: Low (Subscriber-level access and above)
User Interaction: None
Impact: Unauthorized modification of data, privilege escalation, potential system compromise or data leakage

Affected Products

Product | Affected Versions

Xelion Webchat for WordPress | Up to and including 9.1.0

How the Exploit Works

The exploit works by taking advantage of a missing capability check on the xwc_save_settings() function in the Xelion Webchat plugin. Attackers, even with just a Subscriber-level access, can manipulate this function to update arbitrary options on the WordPress site. By updating the default role for registration to administrator and enabling user registration, attackers can register themselves as administrators, gaining full access to the website’s functionalities and sensitive data.

Conceptual Example Code

Here’s a conceptual example of how the vulnerability might be exploited using an HTTP request:

POST /wp-admin/admin-ajax.php HTTP/1.1
Host: target.example.com
Content-Type: application/x-www-form-urlencoded; charset=UTF-8
action=xwc_save_settings&settings[default_role]=administrator&settings[user_registration]=1

In this request, the `action` parameter is set to `xwc_save_settings`, the function that is missing a capability check. The `settings` parameters are used to change the default role to administrator (`settings[default_role]=administrator`) and enable user registration (`settings[user_registration]=1`).

Mitigation Guidance

While the vendor prepares a patch to address this vulnerability, a few temporary mitigations can be applied. Deploying a Web Application Firewall (WAF) or Intrusion Detection System (IDS) can help monitor and block suspicious activities. It’s also advised to limit user registration and disable the Xelion Webchat plugin until a patch is available.

Overview

This article provides a detailed technical analysis of a notable cybersecurity vulnerability, identified as CVE-2025-3761, that affects the popular WordPress plugin, My Tickets – Accessible Event Ticketing. The plugin, which is used widely across various WordPress-based websites for managing event ticketing, has been found to have a critical flaw that could potentially lead to significant security breaches. This vulnerability is particularly significant because it can enable an attacker with basic subscriber-level access to escalate their privileges to an administrator level, thereby gaining full control over the victim’s system.

Vulnerability Summary

CVE ID: CVE-2025-3761
Severity: High, CVSS Severity Score: 8.8
Attack Vector: Remote
Privileges Required: Low (Subscriber level or above)
User Interaction: Required
Impact: System compromise and potential data leakage

Affected Products

Product | Affected Versions

My Tickets – Accessible Event Ticketing | All versions up to and including 2.0.16

How the Exploit Works

The exploit takes advantage of inadequate access restrictions in the mt_save_profile() function in the My Tickets WordPress plugin. This function is supposed to limit the ability to update user roles to only authorized users. However, due to a flaw in its implementation, even unauthorized users with a subscriber-level access can invoke this function and update their roles. An authenticated attacker can exploit this vulnerability by sending a specially crafted request, thereby escalating their privileges to an administrator level.

Conceptual Example Code

An attacker might exploit the vulnerability using an HTTP POST request similar to the following:

POST /wp-admin/admin-ajax.php?action=mt_save_profile HTTP/1.1
Host: target.example.com
Content-Type: application/x-www-form-urlencoded
user_id=10&role=administrator

In this hypothetical example, the attacker sends a POST request to the mt_save_profile action, indicating their user_id and specifying the role they wish to obtain (in this case, “administrator”). A successful exploit would result in the server updating the user’s role to the specified role, granting the attacker administrator privileges.

Mitigation

Users of the My Tickets – Accessible Event Ticketing WordPress plugin are strongly urged to apply the vendor’s patch immediately. If unable to do so, users should consider implementing a Web Application Firewall (WAF) or Intrusion Detection System (IDS) as a temporary mitigation measure. This can help detect and block attempts to exploit this vulnerability until the patch can be applied.