Live › vulnerability › CVE-2026-107743
The Mapster WP Maps WordPress plugin up to and including 2.0.5 exposes a REST route with no permission check, so anyone can save map settings. A stored value is written into a page's inline style without escaping, letting an attacker inject JavaScript that runs for every visitor of that page.
Summary written from the sources below. Check the originals before acting.
First seen by InfraStack 2026-10-29 10:24 UTC. All times on this page are UTC.
Any WordPress site running the Mapster WP Maps plugin at version 2.0.5 or earlier, where the map shortcode is used on pages. The flaw is reachable without logging in because the save route has no capability check or nonce. Sites that do not run this plugin can skip it.
No product ranges from the sources yet.
mapster-wp-maps plugin is installed and its version in the WordPress admin under Plugins./wp-json/mapster-wp-maps/save-mapmaker REST route on the site.mapster_wp_map shortcode for unexpected script content in loading_background_color settings.2.0.5 are affected; the sources do not state a fixed version.Each row is the first time that source carried this signal. The analyst’s rows are its own findings.
The Mapster WP Maps plugin for WordPress is vulnerable to Stored Cross-Site Scripting in versions up to, and including, 2.0.5. This is due to the /wp-json/mapster-wp-maps/save-mapmaker REST route being registered with a permission_callback that unconditionally returns true (no capability check, no nonce), together with the mapster_write_config_to_acf() helper only sanitizing string config values with sanitize_text_field() — which strips HTML tags but leaves quote characters intact — and the mapster_wp_map shortcode renderer in mapster_wordpress_maps_shortcode_display() concatenating the stored loading_background_color value into a single-quoted inline style attribute without esc_attr(). This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.
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