Stored Cross-Site Scripting Vulnerability in Hammas Calendar Plugin for WordPress

CVE-2026-1902

What is CVE-2026-1902?

The Hammas Calendar plugin for WordPress is susceptible to a Stored Cross-Site Scripting issue via the 'apix' parameter in the 'hp-calendar-manage-redirect' shortcode. This vulnerability arises from inadequate input sanitization and output escaping, permitting authenticated users with Contributor-level access and above to inject arbitrary JavaScript code. This injected code can be executed whenever a user accesses a compromised page, posing serious security risks to WordPress sites utilizing this plugin.

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