CVE-2026-11896
My Calendar <= 3.7.14 - Insecure Direct Object Reference to Unauthenticated Sensitive Information Disclosure via 'vcal' Parameter
CVSS Score
5.3
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-639 |
| Vendor | joedolson |
| Product | my calendar – accessible event manager |
| Published | Jul 2, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability
Affected Versions
joedolson / My Calendar – Accessible Event Manager
0 ≤ 3.7.14
References
wordfence.com: https://www.wordfence.com/threat-intel/vulnerabilities/id/a72639df-fa05-414c-b30c-eb285f59d945?source=cve plugins.trac.wordpress.org: https://plugins.trac.wordpress.org/browser/my-calendar/tags/3.7.14/my-calendar-api.php#L212 plugins.trac.wordpress.org: https://plugins.trac.wordpress.org/browser/my-calendar/tags/3.7.14/my-calendar.php#L209 plugins.trac.wordpress.org: https://plugins.trac.wordpress.org/browser/my-calendar/tags/3.7.14/my-calendar-api.php#L246 plugins.trac.wordpress.org: https://plugins.trac.wordpress.org/browser/my-calendar/tags/3.7.14/my-calendar-events.php#L748 plugins.trac.wordpress.org: https://plugins.trac.wordpress.org/browser/my-calendar/tags/3.7.14/includes/ical.php#L26 plugins.trac.wordpress.org: https://plugins.trac.wordpress.org/browser/my-calendar/tags/3.7.14/includes/date-utilities.php#L417 plugins.trac.wordpress.org: https://plugins.trac.wordpress.org/browser/my-calendar/trunk/my-calendar-api.php#L212 plugins.trac.wordpress.org: https://plugins.trac.wordpress.org/browser/my-calendar/trunk/my-calendar.php#L209 plugins.trac.wordpress.org: https://plugins.trac.wordpress.org/browser/my-calendar/trunk/my-calendar-api.php#L246 plugins.trac.wordpress.org: https://plugins.trac.wordpress.org/browser/my-calendar/trunk/my-calendar-events.php#L748 plugins.trac.wordpress.org: https://plugins.trac.wordpress.org/browser/my-calendar/trunk/includes/ical.php#L26 plugins.trac.wordpress.org: https://plugins.trac.wordpress.org/browser/my-calendar/trunk/includes/date-utilities.php#L417 plugins.trac.wordpress.org: https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&old=3572191%40my-calendar&new=3572191%40my-calendar&sfp_email=&sfph_mail=
Credits
Athiwat Tiprasaharn (Jitlada) Tharadol Suksamran (d3kc4rt_1)