CVE-2025-11307 is a stored Cross-Site Scripting (XSS) vulnerability identified in the WP Go Maps WordPress plugin, formerly known as WP Google Maps, affecting versions prior to 9.0.48. The vulnerability stems from the plugin's failure to properly sanitize user input submitted via an unauthenticated AJAX action. Specifically, attackers can submit malicious JavaScript payloads that are stored persistently on the server. These payloads are later retrieved and output without proper escaping through another AJAX call, enabling the execution of arbitrary scripts in the context of users visiting the affected site. Because the AJAX action is unauthenticated, any remote attacker can exploit this flaw without needing valid credentials or user interaction. The vulnerability falls under CWE-79, which covers improper neutralization of input leading to XSS. The lack of a CVSS score indicates that the vulnerability is newly published and not yet scored, but the technical details confirm its potential for significant impact. No known exploits have been reported in the wild at the time of publication, but the widespread use of WP Go Maps in WordPress sites increases the risk of exploitation. The vulnerability could be leveraged to steal session cookies, deface websites, perform phishing attacks, or execute other malicious actions within the victim's browser. The plugin's AJAX endpoints should be scrutinized for input validation and output encoding weaknesses. The vulnerability was reserved on October 4, 2025, and published on November 11, 2025, indicating recent discovery and disclosure. No official patches or updates are linked yet, so users must monitor for vendor releases. The WPScan assigner confirms the vulnerability's authenticity and classification.

For European organizations, the impact of CVE-2025-11307 can be substantial, especially for those relying on WordPress websites with the WP Go Maps plugin integrated. Exploitation could lead to unauthorized script execution in users' browsers, resulting in session hijacking, theft of sensitive information, or unauthorized actions performed on behalf of users. This can damage organizational reputation, lead to data breaches, and cause regulatory compliance issues under GDPR due to compromised user data confidentiality and integrity. Websites used for e-commerce, customer engagement, or internal portals are particularly vulnerable. The stored nature of the XSS increases the risk as malicious scripts persist and affect multiple users over time. Additionally, attackers could use the vulnerability as a foothold to escalate attacks or distribute malware. Given the unauthenticated access required, the attack surface is broad, increasing the likelihood of exploitation. The absence of a patch at disclosure time means organizations must act quickly to implement interim controls. The impact on availability is limited but could occur if attackers deface or disrupt website functionality. Overall, the vulnerability threatens confidentiality and integrity primarily, with moderate availability risk.

European organizations should take the following specific actions to mitigate CVE-2025-11307: 1) Immediately audit all WordPress sites for the presence of the WP Go Maps plugin and identify versions prior to 9.0.48. 2) Monitor the plugin vendor's official channels for the release of a security patch and apply updates promptly once available. 3) Until patched, implement Web Application Firewall (WAF) rules to detect and block suspicious AJAX requests containing script tags or typical XSS payload patterns targeting the plugin's endpoints. 4) Employ Content Security Policy (CSP) headers to restrict the execution of inline scripts and reduce the impact of potential XSS payloads. 5) Conduct thorough input validation and output encoding on any custom code interacting with the plugin or its AJAX actions. 6) Regularly scan websites using automated tools to detect stored XSS vulnerabilities. 7) Educate web administrators and developers about the risks of unauthenticated AJAX endpoints and secure coding practices. 8) Review user permissions and limit exposure of AJAX actions where possible. 9) Monitor logs for unusual AJAX activity indicative of exploitation attempts. These targeted measures go beyond generic advice by focusing on the plugin's specific attack vectors and interim protective controls.