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.
CVE-2026-11896
MEDIUMPre-NVD 5.35.3—
EchelonGraph scoreHIGH confidence
Score 5.3 from GitHub Security Advisory published 2026-07-02. a secondary CVSS source baseline 5.3; sources differ by 0.0.
Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
5.3
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
- Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS: 0%CVSS: 5.3Exploit: NoneExposed: 0
No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.
- CVSS v3
- 5.3
- EG Score
- 5.3(high)
- EPSS
- 23.2%
- KEV
- Not listed
Published
July 2, 2026
Last Modified
July 2, 2026
References (14)
- security@wordfencehttps://plugins.trac.wordpress.org/browser/my-calendar/tags/3.7.14/includes/date-utilities.php#L417
- security@wordfencehttps://plugins.trac.wordpress.org/browser/my-calendar/tags/3.7.14/includes/ical.php#L26
- security@wordfencehttps://plugins.trac.wordpress.org/browser/my-calendar/tags/3.7.14/my-calendar-api.php#L212
- security@wordfencehttps://plugins.trac.wordpress.org/browser/my-calendar/tags/3.7.14/my-calendar-api.php#L246
- security@wordfencehttps://plugins.trac.wordpress.org/browser/my-calendar/tags/3.7.14/my-calendar-events.php#L748
- security@wordfencehttps://plugins.trac.wordpress.org/browser/my-calendar/tags/3.7.14/my-calendar.php#L209
- security@wordfencehttps://plugins.trac.wordpress.org/browser/my-calendar/trunk/includes/date-utilities.php#L417
- security@wordfencehttps://plugins.trac.wordpress.org/browser/my-calendar/trunk/includes/ical.php#L26
- security@wordfencehttps://plugins.trac.wordpress.org/browser/my-calendar/trunk/my-calendar-api.php#L212
- security@wordfencehttps://plugins.trac.wordpress.org/browser/my-calendar/trunk/my-calendar-api.php#L246
- security@wordfencehttps://plugins.trac.wordpress.org/browser/my-calendar/trunk/my-calendar-events.php#L748
- security@wordfencehttps://plugins.trac.wordpress.org/browser/my-calendar/trunk/my-calendar.php#L209
- security@wordfencehttps://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&old=3572191%40my-calendar&new=3572191%40my-calendar&sfp_email=&sfph_mail=
- security@wordfencehttps://www.wordfence.com/threat-intel/vulnerabilities/id/a72639df-fa05-414c-b30c-eb285f59d945?source=cve
Vendor Advisories for CVE-2026-11896(1)
These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.
Frequently asked(5)
What is CVE-2026-11896?
CVE-2026-11896 is a medium vulnerability published on July 2, 2026. 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…
When was CVE-2026-11896 disclosed?
CVE-2026-11896 was first published in the National Vulnerability Database on July 2, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-11896 actively exploited?
CVE-2026-11896 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 23.2% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-11896?
CVE-2026-11896 has a CVSS v3 base score of 5.3 (NVD).
How do I remediate CVE-2026-11896?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-11896, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.
Dependency Blast Radius
Explore the affected products and dependency analysis for CVE-2026-11896
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