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CVE-2026-11896

My Calendar <= 3.7.14 - Insecure Direct Object Reference to Unauthenticated Sensitive Information Disclosure via 'vcal' Parameter

CVSS 5.3 MEDIUMEPSS 0.5%CWE-639
Vexday Risk Score
13Low
SSVC decision (CISA)
Track
No exploitation signal → monitor
CVSS 5.3EPSS 0.5%KEV nãoPoC —Nuclei —Metasploit —Patch —
Lifecycle
02 Jul 2026Published on NVD
Recommendation: Monitor — no exploitation signal at the moment.
The My Calendar – Accessible Event Manager plugin for WordPress is vulnerable to Insecure Direct Object Reference in all versions up to, and including, 3.7.14 via the 'vcal' parameter due to missing validation on a user controlled key. This makes it possible for unauthenticated attackers to enumerate occurrence IDs and access the full iCalendar export of non-public, draft, trashed, and personal calendar events, disclosing sensitive event metadata including titles, descriptions, dates, locations, organizer and host details, permalinks, and related calendar metadata.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
Affected products
joedolson · My Calendar – Accessible Event Manager
References
https://plugins.trac.wordpress.org/browser/my-calendar/tags/3.7.14/includes/date-utilities.php#L417https://plugins.trac.wordpress.org/browser/my-calendar/tags/3.7.14/includes/ical.php#L26https://plugins.trac.wordpress.org/browser/my-calendar/tags/3.7.14/my-calendar-api.php#L212https://plugins.trac.wordpress.org/browser/my-calendar/tags/3.7.14/my-calendar-api.php#L246https://plugins.trac.wordpress.org/browser/my-calendar/tags/3.7.14/my-calendar-events.php#L748https://plugins.trac.wordpress.org/browser/my-calendar/tags/3.7.14/my-calendar.php#L209https://plugins.trac.wordpress.org/browser/my-calendar/trunk/includes/date-utilities.php#L417https://plugins.trac.wordpress.org/browser/my-calendar/trunk/includes/ical.php#L26https://plugins.trac.wordpress.org/browser/my-calendar/trunk/my-calendar-api.php#L212https://plugins.trac.wordpress.org/browser/my-calendar/trunk/my-calendar-api.php#L246https://plugins.trac.wordpress.org/browser/my-calendar/trunk/my-calendar-events.php#L748https://plugins.trac.wordpress.org/browser/my-calendar/trunk/my-calendar.php#L209