CVE Catalog

CVE-2026-13441

HighCVSS 7.2
Published: Updated: Translated: NVD NIST

Summary

The EventPrime plugin for WordPress up to version 4.3.4.2 is vulnerable to Stored Cross-Site Scripting via the 'new_event_type_background_color' parameter due to insufficient input sanitization and output escaping. Authenticated attackers with custom-level access or higher can inject arbitrary web scripts that execute when users access the affected page.

Risk Assessment

The risk includes session hijacking, data theft, or malware distribution. When the Guest Submissions setting is enabled, unauthenticated attackers can exploit this vulnerability, expanding the attack surface.

Recommendation

Immediately update the EventPrime plugin to the latest version. If updating is not possible, disable the Guest Submissions setting (allow_submission_by_anonymous_user) and restrict user permissions to the minimum necessary.

Related vulnerabilities

Original NVD description (English source)

The EventPrime – Events Calendar, Bookings and Tickets plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'new_event_type_background_color' parameter in all versions up to, and including, 4.3.4.2 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with custom-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. This requires the plugin's Guest Submissions setting (allow_submission_by_anonymous_user) to be enabled, which allows unauthenticated attackers to submit event types via the frontend form; when that setting is disabled, exploitation requires at minimum a subscriber-level authenticated account.

Vulnerability data from NVD (NIST) · CISA KEV · EPSS