{"id":"CVE-2026-11896","url":"https://www.cyber-defence.io/tools/cve/CVE-2026-11896","generatedAt":"2026-10-28T02:11:56.178Z","title":"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.","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.","published":"2026-07-02T10:16:27.000Z","lastModified":"2026-07-02T20:17:01.000Z","status":"Deferred","sourceIdentifier":"security@wordfence.com","cvss":{"version":"3.1","score":5.3,"severity":"MEDIUM","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N"},"cwe":["CWE-639"],"affected":[],"epss":{"score":0.00544,"percentile":0.45386,"date":"2026-10-26","history":[]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"low","text":"Lower severity and a low EPSS score (0.54%). Track it; it rarely justifies an emergency change on its own."},"changes":[],"references":[{"url":"https://plugins.trac.wordpress.org/browser/my-calendar/tags/3.7.14/includes/date-utilities.php#L417","source":"security@wordfence.com"},{"url":"https://plugins.trac.wordpress.org/browser/my-calendar/tags/3.7.14/includes/ical.php#L26","source":"security@wordfence.com"},{"url":"https://plugins.trac.wordpress.org/browser/my-calendar/tags/3.7.14/my-calendar-api.php#L212","source":"security@wordfence.com"},{"url":"https://plugins.trac.wordpress.org/browser/my-calendar/tags/3.7.14/my-calendar-api.php#L246","source":"security@wordfence.com"},{"url":"https://plugins.trac.wordpress.org/browser/my-calendar/tags/3.7.14/my-calendar-events.php#L748","source":"security@wordfence.com"},{"url":"https://plugins.trac.wordpress.org/browser/my-calendar/tags/3.7.14/my-calendar.php#L209","source":"security@wordfence.com"},{"url":"https://plugins.trac.wordpress.org/browser/my-calendar/trunk/includes/date-utilities.php#L417","source":"security@wordfence.com"},{"url":"https://plugins.trac.wordpress.org/browser/my-calendar/trunk/includes/ical.php#L26","source":"security@wordfence.com"},{"url":"https://plugins.trac.wordpress.org/browser/my-calendar/trunk/my-calendar-api.php#L212","source":"security@wordfence.com"},{"url":"https://plugins.trac.wordpress.org/browser/my-calendar/trunk/my-calendar-api.php#L246","source":"security@wordfence.com"},{"url":"https://plugins.trac.wordpress.org/browser/my-calendar/trunk/my-calendar-events.php#L748","source":"security@wordfence.com"},{"url":"https://plugins.trac.wordpress.org/browser/my-calendar/trunk/my-calendar.php#L209","source":"security@wordfence.com"},{"url":"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"},{"url":"https://www.wordfence.com/threat-intel/vulnerabilities/id/a72639df-fa05-414c-b30c-eb285f59d945?source=cve","source":"security@wordfence.com"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-11896","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}