CVE-2025-49954 identifies a reflected Cross-site Scripting (XSS) vulnerability in the mithra62 WP-Click-Tracker plugin for WordPress, affecting versions up to and including 0.7.3. The vulnerability stems from improper neutralization of user-supplied input during the generation of web pages, which allows attackers to inject malicious JavaScript code that is reflected back to users without proper sanitization or encoding. This flaw enables an attacker to craft a malicious URL containing executable script code that, when visited by a victim, executes in the victim’s browser context. The attack vector does not require authentication, increasing the risk of exploitation through phishing or social engineering. Although no public exploits have been reported yet, the vulnerability’s nature makes it a prime candidate for exploitation once weaponized. The WP-Click-Tracker plugin is used to track clicks on WordPress sites, and its presence on publicly accessible websites increases the attack surface. Successful exploitation can lead to session hijacking, theft of cookies or credentials, unauthorized actions on behalf of the user, or redirection to malicious websites. The lack of a CVSS score indicates that the vulnerability is newly published and pending detailed assessment. However, based on the technical characteristics, the vulnerability is serious due to its impact on confidentiality and integrity and the ease of exploitation without authentication or complex prerequisites.

For European organizations, especially those operating public-facing WordPress websites using the WP-Click-Tracker plugin, this vulnerability poses a significant risk. Exploitation can compromise user accounts, leak sensitive session information, and facilitate further attacks such as phishing or malware distribution. This can lead to reputational damage, regulatory non-compliance (e.g., GDPR violations due to data leakage), and financial losses. Organizations relying on WP-Click-Tracker for analytics may face disruption in service or data integrity issues. The reflected XSS can also be leveraged to bypass security controls or escalate attacks within the network. Given the widespread use of WordPress in Europe, the potential attack surface is substantial, particularly for SMEs and enterprises that may not have rigorous plugin management policies. The absence of known exploits currently provides a window for proactive mitigation, but the risk of rapid exploitation once exploit code is publicly available is high.

Organizations should immediately inventory their WordPress installations to identify the presence of the WP-Click-Tracker plugin and its version. Until an official patch is released, administrators should consider disabling or uninstalling the plugin to eliminate exposure. If the plugin is essential, manual mitigation can include implementing strict input validation and output encoding on all parameters processed by the plugin, particularly those reflected in web pages. Deploying Web Application Firewalls (WAFs) with rules to detect and block typical XSS payloads targeting WP-Click-Tracker parameters can reduce risk. Enforcing Content Security Policies (CSP) that restrict script execution sources can mitigate the impact of successful XSS attempts. Monitoring web server logs and user reports for suspicious URL patterns or unexpected script execution is advised. Once a patch is available, prompt updating is critical. Additionally, educating users about the risks of clicking untrusted links and employing multi-factor authentication can reduce the impact of potential session hijacking.