CVE-2026-6854
HighCVSS 7.5Summary
The My Calendar – Accessible Event Manager plugin for WordPress is vulnerable to time-based blind SQL injection via the 'mc_auth' parameter in versions up to and including 3.7.8. This is due to insufficient escaping and lack of proper SQL query preparation.
Risk Assessment
Unauthenticated attackers can append additional SQL queries to existing ones, allowing extraction of sensitive information from the database, such as user data or passwords.
Recommendation
Immediately update the My Calendar – Accessible Event Manager plugin to the latest available version that fixes this vulnerability.
Other vulnerabilities in My Calendar – Accessible Event Manager
See all- CVE-2026-77187Medium
Stored Cross-Site Scripting (XSS) vulnerability in the My Calendar – Accessible Event Manager plugin for WordPress, all versions up to and including 3.8.3, via 'before' and 'after' shortcode attributes, due to insufficient input sanitization and output escaping. Authenticated attackers with contributor-level access and above can inject scripts that execute when a page is visited.
- CVE-2026-77186Medium
Stored Cross-Site Scripting (XSS) vulnerability in the My Calendar – Accessible Event Manager plugin for WordPress, all versions up to and including 3.8.3, via the 'fallback' shortcode attribute, due to insufficient input sanitization and output escaping. Attackers with contributor-level access and above can inject scripts using hex-encoded payloads that bypass filters.
- CVE-2026-11896Medium
The My Calendar – Accessible Event Manager plugin for WordPress up to version 3.7.14 inclusive contains an Insecure Direct Object Reference (IDOR) vulnerability via the 'vcal' parameter. Missing validation on a user-controlled key allows unauthenticated attackers to enumerate occurrence IDs and access the full iCalendar export of non-public, draft, trashed, and personal calendar events.
Original NVD description (English source)
The My Calendar – Accessible Event Manager plugin for WordPress is vulnerable to time-based blind SQL Injection via the 'mc_auth' parameter in all versions up to, and including, 3.7.8 due to insufficient escaping on the user supplied parameter and lack of sufficient preparation on the existing SQL query. This makes it possible for unauthenticated attackers to append additional SQL queries into already existing queries that can be used to extract sensitive information from the database.
Vulnerability data from NVD (NIST) · CISA KEV · EPSS