CVE-2025-23584: Pin Locations on Map XSS Vulnerability

CVE-2025-23584 Overview

CVE-2025-23584 is a Reflected Cross-Site Scripting (XSS) vulnerability affecting the Pin Locations on Map WordPress plugin (pin-locations-on-map) developed by arsh91. This vulnerability allows attackers to inject malicious scripts into web pages viewed by other users, potentially leading to session hijacking, credential theft, or unauthorized actions performed on behalf of authenticated users.

The vulnerability stems from improper neutralization of user-supplied input during web page generation, a common flaw categorized under CWE-79. Reflected XSS attacks require social engineering to trick victims into clicking malicious links, but can be highly effective in compromising WordPress site visitors and administrators.

Critical Impact

Attackers can execute arbitrary JavaScript in the context of authenticated user sessions, potentially compromising WordPress administrator accounts and gaining full control over affected websites.

Affected Products

• Pin Locations on Map WordPress Plugin version 1.0 and earlier
• WordPress installations using the pin-locations-on-map plugin

Discovery Timeline

• 2025-03-03 - CVE-2025-23584 published to NVD
• 2026-04-15 - Last updated in NVD database

Technical Details for CVE-2025-23584

Vulnerability Analysis

The Pin Locations on Map plugin fails to properly sanitize user input before reflecting it back in the HTTP response. This allows an attacker to craft a specially formatted URL containing malicious JavaScript code. When a victim clicks the malicious link, the script executes in their browser within the security context of the vulnerable WordPress site.

Reflected XSS vulnerabilities in WordPress plugins are particularly dangerous because they can target site administrators. If an administrator clicks a malicious link while logged into the WordPress dashboard, an attacker could potentially add new administrator accounts, install malicious plugins, or modify site content.

Root Cause

The root cause of this vulnerability is insufficient input validation and output encoding in the Pin Locations on Map plugin. User-supplied data is directly embedded into the HTML response without proper sanitization or escaping, allowing JavaScript code to be injected and executed by the victim's browser.

The plugin likely fails to use WordPress's built-in sanitization functions such as esc_html(), esc_attr(), or wp_kses() when handling user input, leaving the application vulnerable to script injection attacks.

Attack Vector

The attack requires an attacker to craft a malicious URL containing JavaScript payload and convince a victim to click it. This is typically accomplished through phishing emails, social media posts, or comments on other websites. When the victim navigates to the malicious URL while authenticated to the WordPress site, the injected script executes with the victim's privileges.

The reflected nature of this XSS means the malicious payload is not stored on the server but is instead reflected from the HTTP request directly into the response. This makes the attack somewhat harder to execute at scale compared to stored XSS, but it remains a significant security risk.

For detailed technical information, see the PatchStack Vulnerability Report.

Detection Methods for CVE-2025-23584

Indicators of Compromise

• Unusual URL parameters in web server logs containing encoded JavaScript or HTML tags
• Access logs showing requests to the pin-locations-on-map plugin with suspicious query strings containing <script>, javascript:, or event handlers like onerror
• User reports of unexpected browser behavior or pop-ups when using the map functionality

Detection Strategies

• Implement Web Application Firewall (WAF) rules to detect and block common XSS payloads in URL parameters
• Monitor web server access logs for requests containing URL-encoded script tags or JavaScript event handlers
• Deploy browser-based Content Security Policy (CSP) headers to mitigate the impact of successful XSS attacks
• Use automated vulnerability scanners to identify WordPress plugins with known XSS vulnerabilities

Monitoring Recommendations

• Enable detailed logging for the WordPress site and review logs for anomalous requests targeting plugin endpoints
• Configure security information and event management (SIEM) alerts for patterns matching XSS attack attempts
• Regularly audit installed WordPress plugins against vulnerability databases like Patchstack and WPScan

How to Mitigate CVE-2025-23584

Immediate Actions Required

• Deactivate and remove the Pin Locations on Map plugin (pin-locations-on-map) from all WordPress installations until a patched version is available
• Review web server logs for evidence of exploitation attempts targeting this vulnerability
• Implement Content Security Policy headers to reduce the impact of potential XSS attacks
• Consider using an alternative mapping plugin that is actively maintained and has a strong security track record

Patch Information

As of the last update, no official patch has been released for this vulnerability. The plugin affects all versions from initial release through version 1.0. WordPress site administrators should monitor the plugin repository and the PatchStack Vulnerability Report for updates regarding a security fix.

Workarounds

• Disable the Pin Locations on Map plugin until a security patch is released
• Implement a Web Application Firewall (WAF) with XSS filtering rules to block malicious requests
• Add Content Security Policy headers to prevent inline script execution

# Add CSP headers in Apache .htaccess to mitigate XSS impact
Header set Content-Security-Policy "default-src 'self'; script-src 'self'; style-src 'self' 'unsafe-inline'"

# Or in nginx configuration
# add_header Content-Security-Policy "default-src 'self'; script-src 'self'; style-src 'self' 'unsafe-inline'";