CVE-2026-13179
Received Received - Intake

Stored XSS in WP Maps WordPress Plugin via shapes_values Parameter

Publication date: 2026-09-25

Last updated on: 2026-09-25

Assigner: Wordfence

Description
The WP Maps – Google Maps,OpenStreetMap,Mapbox,Store Locator,Listing,Directory & Filters plugin for WordPress is vulnerable to Stored Cross-Site Scripting via shapes_values Parameter in all versions up to, and including, 4.9.8 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with subscriber-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. The fc-call-nonce nonce required by the endpoint is exposed to all frontend visitors who view a map page via window.wpgmp_local.nonce, enabling any authenticated subscriber to read the nonce and craft a valid request; additionally, the secondary _wpnonce check in the drawing handler can be bypassed by simply omitting the _wpnonce parameter from the request.

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Meta Information

Published
2026-09-25
Last Modified
2026-09-25
Generated
2026-09-25
AI Q&A
2026-09-25
EPSS Evaluated
N/A
NVD
CVE-2026-13179
EUVD
EUVD-2026-86600

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
wp_maps google_maps_openstreetmap_mapbox_store_locator_listing_directory_filters to 4.9.8 (inc)

Helpful Resources

Exploitability

CWE
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KEV
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CWE ID Description
CWE-79 The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.

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Executive Summary

This is a Stored Cross-Site Scripting (XSS) vulnerability in the WP Maps plugin for WordPress. It allows authenticated attackers with subscriber-level access or higher to inject malicious scripts via the shapes_values parameter. The plugin fails to properly sanitize input and escape output, enabling script execution when users view affected pages. Attackers can exploit a nonce exposure issue to craft valid requests.

Detection Guidance

Check for unauthorized scripts in WordPress pages using browser developer tools. Inspect map pages for injected web scripts in the shapes_values parameter. Look for suspicious nonce exposure via window.wpgmp_local.nonce in frontend JavaScript.

Impact Analysis

If you use the vulnerable WP Maps plugin, attackers could steal cookies, session tokens, or other sensitive data. They might redirect you to malicious sites, deface your website, or perform actions on your behalf. The impact depends on user privileges; subscribers could escalate to higher-level compromises.

Compliance Impact

This vulnerability could lead to unauthorized data access or modification, violating GDPR's integrity and confidentiality principles. For HIPAA, it may risk protected health information exposure. Compliance failures could result in fines or legal penalties depending on data processed.

Mitigation Strategies
  • Update the WP Maps plugin to the latest version beyond 4.9.8.
  • Review and remove any unauthorized scripts or modifications in WordPress pages.
  • Monitor user roles with subscriber access for unusual activity.

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