CVE-2026-11896
Severity CVSS v4.0:
Pending analysis
Type:
Unavailable / Other
Publication date:
02/07/2026
Last modified:
02/07/2026
Description
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.
Impact
Base Score 3.x
5.30
Severity 3.x
MEDIUM
References to Advisories, Solutions, and Tools
- https://plugins.trac.wordpress.org/browser/my-calendar/tags/3.7.14/includes/date-utilities.php#L417
- https://plugins.trac.wordpress.org/browser/my-calendar/tags/3.7.14/includes/ical.php#L26
- https://plugins.trac.wordpress.org/browser/my-calendar/tags/3.7.14/my-calendar-api.php#L212
- https://plugins.trac.wordpress.org/browser/my-calendar/tags/3.7.14/my-calendar-api.php#L246
- https://plugins.trac.wordpress.org/browser/my-calendar/tags/3.7.14/my-calendar-events.php#L748
- https://plugins.trac.wordpress.org/browser/my-calendar/tags/3.7.14/my-calendar.php#L209
- https://plugins.trac.wordpress.org/browser/my-calendar/trunk/includes/date-utilities.php#L417
- https://plugins.trac.wordpress.org/browser/my-calendar/trunk/includes/ical.php#L26
- https://plugins.trac.wordpress.org/browser/my-calendar/trunk/my-calendar-api.php#L212
- https://plugins.trac.wordpress.org/browser/my-calendar/trunk/my-calendar-api.php#L246
- https://plugins.trac.wordpress.org/browser/my-calendar/trunk/my-calendar-events.php#L748
- https://plugins.trac.wordpress.org/browser/my-calendar/trunk/my-calendar.php#L209
- https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&old=3572191%40my-calendar&new=3572191%40my-calendar&sfp_email=&sfph_mail=
- https://www.wordfence.com/threat-intel/vulnerabilities/id/a72639df-fa05-414c-b30c-eb285f59d945?source=cve