HOME VULNERABILITIESCVE-2026-11896

MEDIUM

CVE-2026-11896

CWE-639Published: July 2, 2026· Updated: Jul 2, 2026

5.3

CVSS v3.1

EPSS:0.31%probability of exploitation in 30 daysPercentile:23.1th

Official 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.

Technical Analysis

CVE-2026-11896 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

CVSS v3.1 Vector Breakdown

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges Req.None

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityLow

IntegrityNone

AvailabilityNone

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

Affected Vendors & Products

Mentioned vendors (from description):

WordPress

CPE data not yet available in NVD for this CVE.

Exploit & PoC Resources

NO KNOWN EXPLOITNo public exploit confirmed at this time

Offensive Security exploit database

GitHub PoC Search

Community PoC repositories

Rapid7 / Metasploit

Metasploit module search

Security advisories & exploits

Official NIST entry

CVE Program entry

External links open in a new tab. Always verify in a controlled environment before use.

All References (14)

→

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/tags/3.7.14/includes/ical.php#L26

→

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-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/my-calendar.php#L209

→

https://plugins.trac.wordpress.org/browser/my-calendar/trunk/includes/date-utilities.php#L417

→

https://plugins.trac.wordpress.org/browser/my-calendar/trunk/includes/ical.php#L26

→

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-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/my-calendar.php#L209

→

https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&old=3572191%40my-calendar&new=3572191%40my-calendar&sfp_email=&sfph_mail=

→

https://www.wordfence.com/threat-intel/vulnerabilities/id/a72639df-fa05-414c-b30c-eb285f59d945?source=cve

Quick Facts

CVE IDCVE-2026-11896

CVSS Score5.3 / 10

SeverityMEDIUM

WeaknessCWE-639

CISA KEVNo

EPSS (30d)0.31%

PublishedJul 2, 2026

Related CVEs (CWE-639)

Recommended Actions

→Apply vendor patches immediately
→Monitor CVE-2026-11896 in threat intel feeds
→Review IDS/IPS signatures for exploitation attempts

Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWATCH.COM. CVE data is provided under the NVD usage policy.

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