CVE-2025-49944 is a reflected Cross-site Scripting (XSS) vulnerability identified in the WPCode Content Ratio plugin for WordPress, developed by Jonatan Jumbert. This vulnerability stems from improper neutralization of user-supplied input during the generation of web pages, which allows an attacker to inject malicious JavaScript code that is reflected back to the user’s browser. The affected versions include all versions up to and including 2.0. The vulnerability does not require any privileges or authentication to exploit but does require user interaction, such as clicking on a maliciously crafted URL. The CVSS v3.1 base score is 7.1, indicating a high severity level. The vector metrics indicate that the attack can be launched remotely (AV:N), with low attack complexity (AC:L), no privileges required (PR:N), but user interaction is necessary (UI:R). The scope is changed (S:C), meaning the vulnerability affects resources beyond the security scope of the vulnerable component. The impact affects confidentiality, integrity, and availability to a low degree individually but collectively can cause significant harm. The vulnerability could allow attackers to steal session cookies, perform actions on behalf of users, or deface websites. No public exploits are currently known, but the vulnerability’s nature makes it a likely target for exploitation once weaponized. The plugin is used in WordPress environments, which are widely deployed across many European organizations for content management and web presence. The lack of available patches at the time of publication increases the urgency for mitigation. The vulnerability highlights the importance of proper input validation and output encoding in web applications to prevent injection attacks.

For European organizations, the impact of CVE-2025-49944 can be significant, especially for those relying on WordPress sites with the WPCode Content Ratio plugin installed. Successful exploitation can lead to theft of sensitive user data such as authentication cookies, enabling session hijacking and unauthorized access. It can also facilitate defacement or injection of malicious content, damaging brand reputation and user trust. The reflected XSS can be used as a vector for phishing attacks targeting employees or customers. Additionally, the vulnerability could be leveraged as part of a broader attack chain to compromise internal networks or escalate privileges. Organizations in sectors such as finance, healthcare, e-commerce, and government, which maintain public-facing WordPress sites, are particularly at risk. The potential for disruption to availability, while lower than confidentiality and integrity impacts, still exists if attackers use the vulnerability to inject disruptive scripts or malware. Given the widespread use of WordPress in Europe, the threat surface is considerable, and the impact could extend to millions of users if exploited at scale.

1. Monitor for official patches or updates from the WPCode Content Ratio plugin developer and apply them immediately once available. 2. Until patches are released, implement Web Application Firewall (WAF) rules to detect and block typical reflected XSS attack patterns targeting the plugin’s endpoints. 3. Employ strict input validation and output encoding on all user-supplied data within the WordPress environment, especially in custom code or plugins. 4. Configure Content Security Policy (CSP) headers to restrict the execution of unauthorized scripts and reduce the impact of XSS attacks. 5. Educate users and administrators about the risks of clicking on suspicious links and implement email filtering to reduce phishing attempts leveraging this vulnerability. 6. Conduct regular security audits and penetration testing focusing on plugin vulnerabilities and injection flaws. 7. Consider isolating or disabling the WPCode Content Ratio plugin if it is not essential, to reduce the attack surface. 8. Monitor logs and network traffic for unusual activity that may indicate exploitation attempts.