CVE-2026-11896
MEDIUM
5.3
CVSS 3.1
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.
Metadata
Severity & Metrics
5.3
MEDIUM CVSS 3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
SSVC — CISA Coordinator
Affected products (1)
| Vendor | Product | Platform | Versions |
|---|---|---|---|
| joedolson | My Calendar – Accessible Event Manager | — | 0 ≤ 3.7.14 |
Weakness (CWE)
| CWE | Source | Description |
|---|---|---|
| CWE-639 | cna | CWE-639 Authorization Bypass Through User-Controlled Key |
CVSS scores (1)
| Score | Severity | Version | Source | Vector |
|---|---|---|---|---|
| 5.3 | MEDIUM | 3.1 | cna | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N |
References (14)
- https://www.wordfence.com/threat-intel/vulnerabilities/id/a72639df-fa05-414c-b30c-eb285f59d945?source=cve
- 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.php#L209
- 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/includes/ical.php#L26
- 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/trunk/my-calendar-api.php#L212
- https://plugins.trac.wordpress.org/browser/my-calendar/trunk/my-calendar.php#L209
- 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/includes/ical.php#L26
- https://plugins.trac.wordpress.org/browser/my-calendar/trunk/includes/date-utilities.php#L417
- https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&old=3572191%40my-calendar&new=3572191%40my-calendar&sfp_email=&sfph_mail=