CVE-2025-3058 is a vulnerability identified in the Xelion Webchat plugin for WordPress, developed by jauharixelion. The flaw stems from a missing authorization check in the function xwc_save_settings(), which is responsible for saving configuration settings within the plugin. This vulnerability affects all versions up to and including 9.1.0. Specifically, the plugin fails to verify whether the user has the appropriate capabilities before allowing changes to be made to critical site options. As a result, any authenticated user with at least Subscriber-level access—which is typically the lowest level of access granted to registered users—can exploit this flaw to modify arbitrary WordPress options. The most significant risk arises from the ability to change the default user role assigned upon registration to 'administrator' and to enable user registration if it was previously disabled. By doing so, an attacker can create new accounts with administrative privileges, effectively escalating their privileges from a low-level user to a site administrator. This leads to a full compromise of the WordPress site, allowing the attacker to execute arbitrary code, manipulate content, install malicious plugins or themes, and potentially pivot to other systems connected to the site. The vulnerability is categorized under CWE-862 (Missing Authorization), indicating a failure to properly restrict access to sensitive functions. No public exploits are currently known, and no patches have been released at the time of this report. The vulnerability was reserved on March 31, 2025, and published on April 24, 2025. Given the widespread use of WordPress and the popularity of chat plugins for customer engagement, this vulnerability poses a significant risk to websites using Xelion Webchat, especially those that allow user registration or have multiple user roles configured.

For European organizations, the impact of this vulnerability can be severe. Many businesses, including e-commerce, service providers, and public sector entities, rely on WordPress for their web presence and customer interaction tools such as chat plugins. Exploitation could lead to unauthorized administrative access, resulting in data breaches, defacement, or complete site takeover. This could disrupt business operations, damage reputation, and lead to regulatory non-compliance under GDPR due to potential exposure of personal data. Organizations that allow user registration or have Subscriber-level users are particularly at risk. Attackers could leverage this vulnerability to create backdoors, implant malware, or use the compromised site as a launchpad for further attacks within the corporate network. Additionally, compromised sites could be used for phishing campaigns or to distribute ransomware. The absence of a patch increases the urgency for organizations to implement compensating controls. The medium severity rating reflects the need for authentication but acknowledges the low privilege level required to exploit the flaw and the high impact of successful exploitation.

1. Immediate mitigation should include disabling user registration on WordPress sites using the Xelion Webchat plugin until a patch is available. 2. Restrict Subscriber-level accounts by reviewing and minimizing the number of users with this role, and consider temporarily elevating the minimum role required to interact with the plugin if possible. 3. Implement Web Application Firewall (WAF) rules to monitor and block unauthorized attempts to access or modify plugin settings, focusing on requests to the xwc_save_settings() function or related endpoints. 4. Conduct thorough audits of user roles and recent changes to WordPress options to detect any unauthorized modifications. 5. Monitor logs for unusual activity, such as new administrator accounts or changes to registration settings. 6. If feasible, temporarily remove or deactivate the Xelion Webchat plugin until a vendor patch is released. 7. Educate site administrators about the risk and encourage prompt application of updates once available. 8. Employ multi-factor authentication (MFA) for all administrative accounts to reduce the risk of account takeover. 9. Consider isolating WordPress instances from critical internal networks to limit lateral movement in case of compromise.