# CVE-2026-8839: MapPress Maps for WordPress authorization bypass in REST API

Source: https://junglewise.ai/threats/cve-2026-8839-mappress-maps-for-wordpress-authorization-bypass-in-rest-api  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-06-06. Updated: 2026-06-06  
License: CC BY 4.0 with a link back

CVE-2026-8839 · Severity: medium · CVSS 5.3 · Published 2026-06-06

The MapPress Maps plugin for WordPress, which allows users to create and manage interactive maps, contains a security flaw in how it handles map data requests. This vulnerability allows unauthorized individuals to view private map details, such as addresses and coordinates, and allows logged-in users with low-level permissions to modify or delete maps they do not own. This could lead to the exposure of sensitive location data or the disruption of map services on a website.

Technologies: [MapPress Maps for WordPress](https://junglewise.ai/threats/technologies/mappress-maps-for-wordpress). Vendors: [MapPress](https://junglewise.ai/threats/vendors/mappress).

## Quick answers

**Is CVE-2026-8839 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-8839 being exploited in the wild.

**How severe is CVE-2026-8839?** Medium severity, with a CVSS score of 5.3, published 6 June 2026.

**Which products and versions are affected?** MapPress Maps for WordPress up to, and including, 2.96.6.

**Is there a fix for CVE-2026-8839?** No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

**How is CVE-2026-8839 attacked?** It is attacked over the network, in a software library.

**Am I affected by CVE-2026-8839?** Check whether you run MapPress Maps for WordPress at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## Technical details

The MapPress Maps for WordPress plugin (up to version 2.96.6) fails to perform ownership verification in its REST API routes registered via Mappress_Api::rest_api_init(). The GET endpoint for retrieving maps uses a permission callback that returns true for everyone, while write endpoints (POST, DELETE, PATCH) only check for the generic 'edit_posts' capability without verifying if the user owns the specific map ID. Consequently, unauthenticated attackers can read map data (POI titles, addresses, coordinates) via ID enumeration, and authenticated users with Contributor-level access or higher can modify, delete, or clone any map on the site. The issue is present at both the API and model layers (Mappress_Map class). A fix is available in version 2.97.1.

## Affected products

- MapPress MapPress Maps for WordPress up to, and including, 2.96.6

## Timeline

- 2026-06-06: disclosed
- 2026-06-06: advisory

## References

- [https://plugins.trac.wordpress.org/browser/mappress-google-maps-for-wordpress/tags/2.95.10/mappress_api.php](https://plugins.trac.wordpress.org/browser/mappress-google-maps-for-wordpress/tags/2.95.10/mappress_api.php)
- [https://plugins.trac.wordpress.org/browser/mappress-google-maps-for-wordpress/tags/2.95.10/mappress_api.php](https://plugins.trac.wordpress.org/browser/mappress-google-maps-for-wordpress/tags/2.95.10/mappress_api.php)
- [https://plugins.trac.wordpress.org/browser/mappress-google-maps-for-wordpress/tags/2.95.10/mappress_api.php](https://plugins.trac.wordpress.org/browser/mappress-google-maps-for-wordpress/tags/2.95.10/mappress_api.php)
- [https://plugins.trac.wordpress.org/browser/mappress-google-maps-for-wordpress/tags/2.95.10/mappress_api.php](https://plugins.trac.wordpress.org/browser/mappress-google-maps-for-wordpress/tags/2.95.10/mappress_api.php)
- [https://plugins.trac.wordpress.org/browser/mappress-google-maps-for-wordpress/tags/2.95.10/mappress_api.php](https://plugins.trac.wordpress.org/browser/mappress-google-maps-for-wordpress/tags/2.95.10/mappress_api.php)
- [https://plugins.trac.wordpress.org/browser/mappress-google-maps-for-wordpress/tags/2.95.10/mappress_api.php](https://plugins.trac.wordpress.org/browser/mappress-google-maps-for-wordpress/tags/2.95.10/mappress_api.php)
- [https://plugins.trac.wordpress.org/browser/mappress-google-maps-for-wordpress/tags/2.95.10/mappress_api.php](https://plugins.trac.wordpress.org/browser/mappress-google-maps-for-wordpress/tags/2.95.10/mappress_api.php)

## Related threats

- [MapPress Maps for WordPress information disclosure via user enumeration](https://junglewise.ai/threats/cve-2026-118168-the-mappress-wordpress-plugin-before-2-97-15-does-not-restrict)
- [MapPress Maps for WordPress sensitive data exposure](https://junglewise.ai/threats/cve-2026-65564-mappress-maps-for-wordpress-sensitive-data-exposure)