CVE-2025-14125 identifies a reflected Cross-Site Scripting (XSS) vulnerability in the Complag plugin for WordPress, maintained by the vendor andru1. The flaw exists in all versions up to and including 1.0.2 and is due to improper neutralization of input during web page generation, specifically via the $_SERVER['PHP_SELF'] variable. This variable is used in generating web pages without sufficient sanitization or output escaping, allowing attackers to inject arbitrary JavaScript code. Because the vulnerability is reflected, the malicious script is embedded in a crafted URL that, when clicked by a victim, causes the script to execute in the victim’s browser context. The attack requires no authentication but does require user interaction (clicking a malicious link). The CVSS 3.1 vector (AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N) indicates network attack vector, low attack complexity, no privileges required, user interaction required, scope changed, and low impact on confidentiality and integrity, with no impact on availability. The vulnerability can be exploited to steal session cookies, perform actions on behalf of the user, or deface content. No public exploits are known at this time, and no patches have been linked yet. The vulnerability is classified under CWE-79, which covers improper neutralization of input leading to XSS. The reflected nature means the attack surface is primarily public-facing web pages using the vulnerable plugin.

For European organizations, the impact of this vulnerability can be significant, particularly for those relying on WordPress websites with the Complag plugin installed. Successful exploitation can lead to theft of user credentials or session tokens, enabling attackers to impersonate users or administrators. This can result in unauthorized access to sensitive information or administrative functions, potentially leading to data breaches or website defacement. The vulnerability does not directly impact system availability but can damage organizational reputation and trust. Since the attack requires user interaction, phishing or social engineering campaigns could be used to lure users into clicking malicious links. Organizations with e-commerce, customer portals, or sensitive user data hosted on WordPress sites are at higher risk. The reflected XSS can also be used as a stepping stone for more complex attacks, including delivering malware or redirecting users to malicious sites. The medium CVSS score reflects moderate risk but should not be underestimated given the widespread use of WordPress in Europe.

Immediate mitigation steps include monitoring for suspicious URL patterns that exploit the $_SERVER['PHP_SELF'] variable and implementing Web Application Firewall (WAF) rules to detect and block reflected XSS payloads targeting the Complag plugin. Organizations should audit their WordPress installations to identify the presence of the Complag plugin and its version. Until an official patch is released, manual code review and modification to sanitize and escape the $_SERVER['PHP_SELF'] variable before output is recommended. Employing Content Security Policy (CSP) headers can reduce the impact of XSS by restricting script execution sources. User education to recognize phishing attempts and suspicious links can reduce successful exploitation. Regular backups and monitoring of website integrity can help detect and recover from defacement or compromise. Once a vendor patch is available, prompt application is critical. Additionally, consider restricting access to administrative interfaces and employing multi-factor authentication to limit damage from session hijacking.