CVE-2025-9044: Mapster WP Maps <= 1.20.0 - Authenticated (Contributor+) Stored Cross-Site Scripting

Severity: medium (CVSS 6.4 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.3% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2025-09-26 · updated 2026-10-11
Weakness: CWE-79

Description

The Mapster WP Maps plugin for WordPress is vulnerable to Stored Cross-Site Scripting via multiple fields in versions up to, and including, 1.20.0 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers with contributor-level permissions and above to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.

Affected products

Mapster WP Maps: through 1.20.0

References

https://plugins.trac.wordpress.org/browser/mapster-wp-maps/tags/1.18.0/admin/includes/acf-map-fields.php#L13932
https://plugins.trac.wordpress.org/browser/mapster-wp-maps/tags/1.18.0/admin/includes/acf-map-fields.php#L13952
https://plugins.trac.wordpress.org/browser/mapster-wp-maps/tags/1.18.0/admin/includes/acf-map-fields.php#L13972
https://plugins.trac.wordpress.org/browser/mapster-wp-maps/tags/1.18.0/admin/includes/acf-map-fields.php#L15547
https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&old=3363333%40mapster-wp-maps&new=3363333%40mapster-wp-maps&sfp_email=&sfph_mail=
https://www.wordfence.com/threat-intel/vulnerabilities/id/b0f2c7f0-ff24-4489-9fb4-8a98ac6dc09a?source=cve

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