CVE-2025-49351 is a Cross-Site Request Forgery (CSRF) vulnerability identified in the Valentin Agachi Create Posts & Terms WordPress plugin, affecting all versions up to and including 1.3.1. The vulnerability allows an attacker to trick an authenticated user into submitting forged requests to the vulnerable plugin, which then processes these requests without proper verification. This can lead to Stored Cross-Site Scripting (XSS), where malicious scripts are permanently stored on the target website and executed in the context of users visiting the site. The CVSS 3.1 base score of 7.1 reflects a high severity, with an attack vector of network (AV:N), low attack complexity (AC:L), no privileges required (PR:N), but requiring user interaction (UI:R). The scope is changed (S:C), indicating that exploitation affects resources beyond the vulnerable component. The impact affects confidentiality, integrity, and availability to a limited extent (C:L/I:L/A:L). No known exploits are currently reported in the wild, but the vulnerability poses a significant risk due to the potential for persistent XSS attacks that can steal user credentials, perform unauthorized actions, or deface websites. The plugin is commonly used in WordPress environments to facilitate content creation and taxonomy management, making it a valuable target for attackers aiming to compromise websites or their visitors. The lack of available patches at the time of reporting emphasizes the need for immediate mitigation efforts.

For European organizations, the impact of CVE-2025-49351 can be substantial, especially for those relying on WordPress websites that utilize the Create Posts & Terms plugin. Successful exploitation can lead to stored XSS attacks, enabling attackers to execute arbitrary JavaScript in the browsers of site visitors or administrators. This can result in credential theft, session hijacking, unauthorized content manipulation, and potential defacement. The compromise of website integrity and availability can damage organizational reputation and trust, particularly for e-commerce, governmental, and media websites. Additionally, the breach of confidentiality through stolen cookies or tokens can facilitate further attacks within the network. Given the plugin’s role in content and taxonomy management, attackers might also inject malicious content that spreads malware or phishing campaigns. The requirement for user interaction means phishing or social engineering campaigns could be used to trigger the exploit. The vulnerability’s network attack vector and lack of required privileges increase the risk of widespread exploitation if left unmitigated.

1. Monitor the vendor’s official channels for patches and apply updates to the Create Posts & Terms plugin immediately upon release. 2. Implement Web Application Firewall (WAF) rules to detect and block CSRF attack patterns targeting the plugin’s endpoints. 3. Enforce strict Content Security Policy (CSP) headers to mitigate the impact of stored XSS by restricting script execution sources. 4. Disable or restrict the plugin’s usage on sites where it is not essential, reducing the attack surface. 5. Employ anti-CSRF tokens in all forms and verify them server-side to prevent unauthorized request submissions. 6. Conduct regular security audits and penetration testing focusing on WordPress plugins and their configurations. 7. Educate users and administrators about phishing and social engineering risks that could trigger CSRF attacks. 8. Monitor logs for unusual POST requests or changes in content that could indicate exploitation attempts. 9. Consider isolating critical WordPress instances or using security plugins that provide enhanced CSRF and XSS protections. 10. Backup website data regularly to enable quick recovery in case of compromise.