Vulnerabilities and security researches forcalendar calendar

Jun 07, 2024

CVE, Research URL: CVE-2024-2831
Home page URL: Security reports for Calendar
Application: Calendar
Date: May 02, 2024
Research Description: The Calendar plugin for WordPress is vulnerable to SQL Injection via the plugin's shortcodes in all versions up to, and including, 1.3.14 due to insufficient escaping on the user supplied parameter and lack of sufficient preparation on the existing SQL query. This makes it possible for authenticated attackers, with contributor access or higher, to append additional SQL queries into already existing queries that can be used to extract sensitive information from the database.
Affected versions: max 1.3.15.
Status: vulnerable

CVE, Research URL: CVE-2018-18872
Home page URL: Security reports for Calendar
Application: Calendar
Date: May 13, 2019
Research Description: The Kieran O'Shea Calendar plugin before 1.3.11 for WordPress has Stored XSS via the event_title parameter in a wp-admin/admin.php?page=calendar add action, or the category name during category creation at the wp-admin/admin.php?page=calendar-categories URI.
Affected versions: max 1.3.11.
Status: vulnerable

CVE, Research URL: CVE-2013-2698
Home page URL: Security reports for Calendar
Application: Calendar
Date: May 27, 2014
Research Description: Cross-site request forgery (CSRF) vulnerability in the Calendar plugin before 1.3.3 for WordPress allows remote attackers to hijack the authentication of users for requests that add a calendar entry via unspecified vectors.
Affected versions: max 1.3.8.
Status: vulnerable

Jan 11, 2026

CVE, Research URL: CVE-2025-14548
Home page URL: Security reports for Calendar
Application: Calendar
Date: Dec 23, 2025
Research Description: The Calendar plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'event_desc' parameter in all versions up to, and including, 1.3.16 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, granted they can convince an administrator to enable lower privilege users to manage calendar events via the plugin settings.
Affected versions: max 1.3.17.
Status: vulnerable