{"id":"CVE-2026-11896","aliases":["EUVD-2026-41266","GHSA-rfww-46mr-4mrf"],"status":"published","title":"My Calendar \u003c= 3.7.14 - Insecure Direct Object Reference to Unauthenticated Sensitive Information Disclosure via 'vcal' Parameter","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.","severity":{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-10","score":0.00544,"percentile":0.45976,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-639"],"published":"2026-07-02T08:33:06Z","modified":"2026-07-02T20:17:00Z","products":[{"vendor":"joedolson","product":"my calendar – accessible event manager"}],"references":[{"url":"https://www.wordfence.com/threat-intel/vulnerabilities/id/a72639df-fa05-414c-b30c-eb285f59d945?source=cve"},{"url":"https://plugins.trac.wordpress.org/browser/my-calendar/tags/3.7.14/my-calendar-api.php#L212"},{"url":"https://plugins.trac.wordpress.org/browser/my-calendar/tags/3.7.14/my-calendar.php#L209"},{"url":"https://plugins.trac.wordpress.org/browser/my-calendar/tags/3.7.14/my-calendar-api.php#L246"},{"url":"https://plugins.trac.wordpress.org/browser/my-calendar/tags/3.7.14/my-calendar-events.php#L748"},{"url":"https://plugins.trac.wordpress.org/browser/my-calendar/tags/3.7.14/includes/ical.php#L26"},{"url":"https://plugins.trac.wordpress.org/browser/my-calendar/tags/3.7.14/includes/date-utilities.php#L417"},{"url":"https://plugins.trac.wordpress.org/browser/my-calendar/trunk/my-calendar-api.php#L212"},{"url":"https://plugins.trac.wordpress.org/browser/my-calendar/trunk/my-calendar.php#L209"},{"url":"https://plugins.trac.wordpress.org/browser/my-calendar/trunk/my-calendar-api.php#L246"},{"url":"https://plugins.trac.wordpress.org/browser/my-calendar/trunk/my-calendar-events.php#L748"},{"url":"https://plugins.trac.wordpress.org/browser/my-calendar/trunk/includes/ical.php#L26"},{"url":"https://plugins.trac.wordpress.org/browser/my-calendar/trunk/includes/date-utilities.php#L417"},{"url":"https://plugins.trac.wordpress.org/changeset?sfp_email=\u0026sfph_mail=\u0026reponame=\u0026old=3572191%40my-calendar\u0026new=3572191%40my-calendar\u0026sfp_email=\u0026sfph_mail="},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-11896"},{"url":"https://github.com/advisories/GHSA-rfww-46mr-4mrf"}],"sources":{"cve":[{"id":"CVE-2026-11896","title":"My Calendar \u003c= 3.7.14 - Insecure Direct Object Reference to Unauthenticated Sensitive Information Disclosure via 'vcal' Parameter","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.","status":"published","published":"2026-07-02T08:33:06.892Z","modified":"2026-07-02T19:42:08.293Z","cvss":[{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N","level":"medium","assessor":"cna"}],"cwes":["CWE-639"],"updated_at":"2026-11-02T14:20:04.809935Z"}],"euvd":[{"id":"EUVD-2026-41266","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.","status":"published","published":"2026-07-02T08:33:06Z","modified":"2026-07-02T19:42:08Z","cvss":[{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N","level":"medium"}],"updated_at":"2026-11-02T18:20:17.020342Z"}],"ghsa":[{"id":"GHSA-rfww-46mr-4mrf","title":"The My Calendar – Accessible Event Manager plugin for WordPress is vulnerable to Insecure Direct...","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.","status":"published","published":"2026-07-02T12:30:58Z","modified":"2026-07-02T12:31:03Z","cvss":[{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N","level":"medium"}],"cwes":["CWE-639"],"updated_at":"2026-11-02T15:09:10.929571Z"}],"nvd":[{"id":"CVE-2026-11896","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.","status":"published","published":"2026-07-02T10:16:27.28Z","modified":"2026-07-02T20:17:00.593Z","cvss":[{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N","level":"medium","assessor":"secondary"}],"cwes":["CWE-639"],"updated_at":"2026-11-02T14:12:27.199837Z"}]}}