CVE-2025-22772: Mapbox for WP Advanced XSS Vulnerability

CVE-2025-22772 Overview

CVE-2025-22772 is a reflected Cross-Site Scripting (XSS) vulnerability in the mapbox-for-wp-advanced WordPress plugin developed by stephanemartinw. The flaw affects all versions up to and including 1.0.0 of Mapbox for WP Advanced. Attackers can craft malicious URLs that, when visited by an authenticated or unauthenticated user, execute arbitrary JavaScript in the victim's browser within the context of the vulnerable WordPress site. The issue is tracked under CWE-79: Improper Neutralization of Input During Web Page Generation.

Critical Impact

Successful exploitation enables session hijacking, credential theft, administrative action forgery, and arbitrary content injection within the affected WordPress site context.

Affected Products

• stephanemartinw Mapbox for WP Advanced (mapbox-for-wp-advanced) — versions through 1.0.0
• WordPress installations with the plugin active
• Site visitors and authenticated administrators rendering attacker-supplied URLs

Discovery Timeline

• 2025-01-22 - CVE-2025-22772 published to NVD
• 2026-04-23 - Last updated in NVD database

Technical Details for CVE-2025-22772

Vulnerability Analysis

The plugin reflects user-controlled input into HTTP responses without proper output encoding or input sanitization. When a victim follows a crafted link, the server returns the attacker's payload inside the rendered page, where the browser executes it as part of the trusted document. Because the issue is reflected and requires user interaction, attackers typically deliver payloads through phishing emails, social media links, or compromised third-party content. The scope is changed under the CVSS vector, indicating that successful exploitation can affect resources beyond the vulnerable component, such as the authenticated WordPress session.

Root Cause

The root cause is missing neutralization of special characters in request parameters processed by the plugin before they are inserted into HTML output. The plugin fails to apply WordPress core escaping functions such as esc_html(), esc_attr(), or wp_kses() on parameters reflected back to the response. This omission allows <script> tags and event handler attributes supplied by the attacker to be rendered verbatim.

Attack Vector

An attacker constructs a URL pointing to a vulnerable endpoint exposed by mapbox-for-wp-advanced and embeds a JavaScript payload in a request parameter. The attacker delivers the link to a target user. When the target opens it, the plugin echoes the payload into the page, and the browser executes the script under the origin of the WordPress site. With administrative privileges in scope, the payload can call privileged AJAX endpoints, create new admin users, or exfiltrate session cookies.

Detailed technical information is available in the Patchstack Vulnerability Report.

Detection Methods for CVE-2025-22772

Indicators of Compromise

• Inbound HTTP requests to mapbox-for-wp-advanced plugin endpoints containing URL-encoded <script>, onerror=, onload=, or javascript: strings
• Referer headers pointing to external phishing domains followed by access to plugin URLs
• Unexpected creation of WordPress administrator accounts or modification of plugin/theme files following user clicks on external links

Detection Strategies

• Inspect web server access logs for query strings targeting the plugin path containing HTML metacharacters or encoded JavaScript payloads
• Deploy a Web Application Firewall (WAF) ruleset for OWASP CRS XSS signatures and tune it to monitor the plugin's request handlers
• Correlate browser-side Content Security Policy (CSP) violation reports with WordPress access logs to identify exploitation attempts

Monitoring Recommendations

• Enable WordPress audit logging for administrative actions, user creation, and plugin file modifications
• Monitor outbound traffic from administrator browsers for anomalous connections that may indicate session token exfiltration
• Track plugin inventory and alert on installations of mapbox-for-wp-advanced at version 1.0.0 or earlier

How to Mitigate CVE-2025-22772

Immediate Actions Required

• Deactivate and remove the mapbox-for-wp-advanced plugin until a patched version is available
• Force a password reset and invalidate active sessions for all WordPress administrator accounts
• Audit recent administrator activity, user creation events, and plugin/theme file changes for signs of exploitation

Patch Information

At the time of publication, no fixed version is listed. Versions through 1.0.0 are affected. Monitor the Patchstack advisory and the official WordPress plugin repository for an updated release that adds proper input sanitization and output escaping.

Workarounds

• Restrict access to the plugin's endpoints at the web server or WAF layer until a fix is published
• Implement a strict Content Security Policy that disallows inline scripts and untrusted script sources to limit the impact of reflected payloads
• Train administrators to avoid clicking unverified links and to access the WordPress admin panel only from trusted sessions

# Example: disable the vulnerable plugin via WP-CLI
wp plugin deactivate mapbox-for-wp-advanced
wp plugin delete mapbox-for-wp-advanced

# Example: add a strict CSP header in Nginx
add_header Content-Security-Policy "default-src 'self'; script-src 'self'; object-src 'none'; base-uri 'self';" always;