CVE-2026-11896

5.3 MEDIUM
Published: July 02, 2026 Modified: July 02, 2026
View on NVD

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.

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CVSS v3.x Details

0.0 Low Medium High Critical 10.0
Vector String
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

References to Advisories, Solutions, and Tools

Patch Vendor Advisory Exploit Third Party Advisory
https://plugins.trac.wordpress.org/browser/my-calendar/tags/3.7.14/includes/date-utilities.php#L417
Source: security@wordfence.com
https://plugins.trac.wordpress.org/browser/my-calendar/tags/3.7.14/includes/ical.php#L26
Source: security@wordfence.com
https://plugins.trac.wordpress.org/browser/my-calendar/tags/3.7.14/my-calendar-api.php#L212
Source: security@wordfence.com
https://plugins.trac.wordpress.org/browser/my-calendar/tags/3.7.14/my-calendar-api.php#L246
Source: security@wordfence.com
https://plugins.trac.wordpress.org/browser/my-calendar/tags/3.7.14/my-calendar-events.php#L748
Source: security@wordfence.com
https://plugins.trac.wordpress.org/browser/my-calendar/tags/3.7.14/my-calendar.php#L209
Source: security@wordfence.com
https://plugins.trac.wordpress.org/browser/my-calendar/trunk/includes/date-utilities.php#L417
Source: security@wordfence.com
https://plugins.trac.wordpress.org/browser/my-calendar/trunk/includes/ical.php#L26
Source: security@wordfence.com
https://plugins.trac.wordpress.org/browser/my-calendar/trunk/my-calendar-api.php#L212
Source: security@wordfence.com
https://plugins.trac.wordpress.org/browser/my-calendar/trunk/my-calendar-api.php#L246
Source: security@wordfence.com
https://plugins.trac.wordpress.org/browser/my-calendar/trunk/my-calendar-events.php#L748
Source: security@wordfence.com
https://plugins.trac.wordpress.org/browser/my-calendar/trunk/my-calendar.php#L209
Source: security@wordfence.com
https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&old=3572191%40my-calendar&new=3572191%40my-calendar&sfp_email=&sfph_mail=
Source: security@wordfence.com
https://www.wordfence.com/threat-intel/vulnerabilities/id/a72639df-fa05-414c-b30c-eb285f59d945?source=cve
Source: security@wordfence.com

14 reference(s) from NVD

Quick Stats

CVSS v3 Score
5.3 / 10.0
EPSS (Exploit Probability)
0.3%
23th percentile
Exploitation Status
Not in CISA KEV

Weaknesses (CWE)

CWE-639

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