CVE-2025-10313 is a vulnerability classified under CWE-862 (Missing Authorization) affecting the Find And Replace content plugin for WordPress developed by jankimoradiya. The root cause is the absence of a capability check in the far_admin_ajax_fun() function, which handles AJAX requests within the plugin. This missing authorization allows unauthenticated attackers to invoke this function and inject arbitrary web scripts into WordPress pages, resulting in stored cross-site scripting (XSS) and arbitrary content replacement. Stored XSS can be leveraged to execute malicious JavaScript in the context of users visiting the compromised site, potentially leading to session hijacking, privilege escalation, or redirecting users to malicious sites. The vulnerability affects all plugin versions up to and including 1.1, with no authentication or user interaction required for exploitation. The CVSS v3.1 base score is 7.2, reflecting a high severity due to network attack vector, low attack complexity, no privileges required, no user interaction, and a scope change impacting confidentiality and integrity. Although no public exploits have been reported yet, the vulnerability’s characteristics make it a critical concern for WordPress administrators, especially given the widespread use of WordPress and its plugins. The lack of an official patch or update at the time of publication increases the urgency for mitigation.

The primary impact of CVE-2025-10313 is the compromise of website integrity and confidentiality. Attackers can inject malicious scripts that execute in the browsers of site visitors and administrators, potentially stealing session cookies, escalating privileges, or redirecting users to phishing or malware sites. This can lead to unauthorized access to administrative functions, defacement, data theft, or distribution of malware. For organizations, this undermines user trust, damages brand reputation, and may result in regulatory penalties if user data is compromised. The vulnerability’s exploitation does not require authentication, increasing the attack surface and ease of exploitation. Given WordPress’s dominant market share in content management systems globally, a large number of websites using this plugin are at risk, including corporate, governmental, and e-commerce sites. The scope of affected systems is broad, and the impact on confidentiality and integrity is significant, though availability is not directly affected.

Immediate mitigation steps include disabling or uninstalling the vulnerable Find And Replace content plugin until an official patch is released. Administrators should monitor plugin updates from the vendor and apply patches promptly once available. As a temporary workaround, restricting access to the AJAX endpoint far_admin_ajax_fun() via web application firewall (WAF) rules or server-level access controls can reduce exposure. Implementing Content Security Policy (CSP) headers can help mitigate the impact of injected scripts by restricting script execution sources. Regularly auditing installed plugins for vulnerabilities and minimizing the use of unnecessary plugins reduces attack surface. Additionally, monitoring website traffic and logs for suspicious AJAX requests or unusual content changes can aid in early detection of exploitation attempts. Educating site administrators about the risks of unauthorized plugin usage and maintaining strong administrative credentials further strengthens defense.