My Calendar, CVE-2026-77187

CVE, Research URL: CVE-2026-77187
Home page URL: Security reports for My Calendar
Application: My Calendar
Published on: Sep 09, 2026
Research Description: The My Calendar – Accessible Event Manager plugin for WordPress is vulnerable to Stored Cross-Site Scripting via 'before' and 'after' Shortcode Attributes in all versions up to, and including, 3.8.3 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with contributor-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.
Affected versions: max 3.8.4.
Status: vulnerable