Executive Summary

CVE-2026-39646 is a Cross Site Scripting (XSS) vulnerability found in the WordPress Leaflet Map Plugin versions up to and including 3.4.4.

This vulnerability allows attackers to inject malicious scripts, such as redirects, advertisements, or other HTML payloads, into websites using the plugin.

These malicious scripts execute when visitors access the affected site.

Exploitation requires a user with at least Contributor or Developer privileges to interact with a crafted link, page, or form.

Useful 0 Not Useful 0

Impact Analysis

The vulnerability can lead to attackers injecting and executing malicious scripts on your website, potentially causing unwanted redirects, displaying unauthorized advertisements, or executing other harmful HTML payloads.

This can compromise the security and integrity of your website and negatively affect user experience.

Since exploitation requires user interaction and certain privileges, the risk is moderate but still significant.

No official patch is available as of the report date, so immediate mitigation involves seeking help from hosting providers or web developers.

Useful 0 Not Useful 0

Detection Guidance

This vulnerability is a Stored Cross-Site Scripting (XSS) issue in the WordPress Leaflet Map Plugin up to version 3.4.4. Detection typically involves checking for the presence of the vulnerable plugin version and monitoring for suspicious script injections in web pages generated by the plugin.

Since exploitation requires user interaction and injection of malicious scripts, detection can include reviewing web server logs for unusual requests or payloads, and scanning the website content for injected scripts.

Specific commands are not provided in the resources, but general approaches include:

• Checking the installed plugin version via WordPress admin or by inspecting the plugin files.
• Using web vulnerability scanners that detect XSS vulnerabilities.
• Searching for suspicious script tags or payloads in the website's HTML output.

Useful 0 Not Useful 0

Mitigation Strategies

Immediate mitigation involves updating the WordPress Leaflet Map Plugin to a non-vulnerable version; however, as of the report date, no official patch is available.

Since no official patch exists, users are advised to seek assistance from hosting providers or web developers to implement temporary protective measures.

Additional recommended steps include limiting user privileges to prevent attackers from exploiting the vulnerability, especially restricting Contributor or Developer level access.

Monitoring for suspicious activity and applying web application firewalls (WAF) rules to block malicious scripts can also help reduce risk.

Useful 0 Not Useful 0

Compliance Impact

The vulnerability is a Stored Cross-Site Scripting (XSS) issue that allows attackers to inject malicious scripts into websites using the Leaflet Map plugin. Such vulnerabilities can potentially lead to unauthorized access or manipulation of user data.

While the provided information does not explicitly mention compliance with standards like GDPR or HIPAA, vulnerabilities that enable injection of malicious scripts can pose risks to data confidentiality and integrity, which are critical aspects of these regulations.

Therefore, if exploited, this vulnerability could impact compliance by exposing personal or sensitive data to unauthorized parties, potentially leading to violations of data protection requirements under regulations such as GDPR and HIPAA.

Useful 0 Not Useful 0