My Calendar <= 3.7.14 — Insecure Direct Object Reference to Unauthenticated Sensitive Information Disclosure via 'vcal' Parameter
CVE-2026-11896Published · Updated Action summary
Affected: ≤3.7.14Update to 3.7.15 or newer
All remediation steps- Severity
- Medium5.3
- CVSS
- 5.3CVSS 3.1 · CNA (Wordfence)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:NWhat does this vector mean?
AV:NAttack vector- Network
AC:LAttack complexity- Low
PR:NPrivileges required- None
UI:NUser interaction- None
S:UScope- Unchanged
C:LConfidentiality- Low
I:NIntegrity- None
A:NAvailability- None
- Required access
- No account needed
- Exploit prediction (EPSS)
- No score
- CISA KEV
- Not listed
On this page8
Am I affected?
My Calendar – Accessible Event Manager my-calendar
- Affected≤ 3.7.14
- Patched in3.7.15
Update to 3.7.15 or newer.
You are affected if you run ≤ 3.7.14. Version 3.7.15 and later are not affected by this issue.
- Check your version: in wp-admin go to Plugins → Installed Plugins and read the version under My Calendar – Accessible Event Manager.
- No admin access? Run a passive check of your site. It reads public files only.
- No account is needed to exploit this. Treat any exposed site on an affected version as at risk.
What to do
- Update to version 3.7.15, or a newer patched version
- Rotate administrator passwords and application secrets if the site ran a vulnerable version while publicly reachable.
- Watch My Calendar – Accessible Event Manager to get an email when the next vulnerability is published.
Advisory
Source description from Wordfence Intelligence, credited to Athiwat Tiprasaharn (Jitlada), Tharadol Suksamran (d3kc4rt_1).
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.
Exploits & references
Proof-of-concept & detection
No public proof-of-concept or detection template is known for this vulnerability.
Advisories & patches
- Advisorywordfence.com
Related CVEs
More in My Calendar – Accessible Event Manager
All 24| Severity | Vulnerability | CVE | Published |
|---|---|---|---|
| Medium6.5 | 3.8.11 - Unauthenticated Arbitrary Shortcode Execution 3.8.8 – <3.8.11Update to 3.8.11 | CVE-2026-119714 | |
| Critical9.8 | Unauthenticated Privilege Escalation to 'mcs' Parameter via Reflected Shortcode Injection into 'above' Attribute ≤3.8.7Update to 3.4.25 or 3.5.22 or 3.6.18 or 3.7.18 or 3.8.8 | CVE-2026-104798 | |
| Medium6.4 | Authenticated (Contributor+) Stored Cross-Site Scripting via 'fallback' Shortcode Attribute ≤3.8.3Update to 3.8.4 | CVE-2026-77186 | |
| Medium6.4 | Authenticated (Contributor+) Stored Cross-Site Scripting via 'before' and 'after' Shortcode Attributes ≤3.8.3Update to 3.8.4 | CVE-2026-77187 | |
| High7.5 | Unauthenticated SQL Injection via 'mc_auth' and 'mc_host' Parameters ≤3.7.8Update to 3.7.9 | CVE-2026-6854 |
- Medium6.53.8.11 - Unauthenticated Arbitrary Shortcode Execution
3.8.8 – <3.8.11Update to 3.8.11
- Critical9.8Unauthenticated Privilege Escalation to 'mcs' Parameter via Reflected Shortcode Injection into 'above' Attribute
≤3.8.7Update to 3.4.25 or 3.5.22 or 3.6.18 or 3.7.18 or 3.8.8
- Medium6.4Authenticated (Contributor+) Stored Cross-Site Scripting via 'fallback' Shortcode Attribute
≤3.8.3Update to 3.8.4
- Medium6.4Authenticated (Contributor+) Stored Cross-Site Scripting via 'before' and 'after' Shortcode Attributes
≤3.8.3Update to 3.8.4
- High7.5Unauthenticated SQL Injection via 'mc_auth' and 'mc_host' Parameters
≤3.7.8Update to 3.7.9
Timeline
CVE published
Severity medium, CVSS 5.3
Record last updated
Sources & licenses
Wordfence record- Vulnerability data
- Wordfence Intelligence. Copyright 2012-2026 Defiant Inc. Licensed under the CC BY-SA 4.0.
- CVE® identifiers
- Copyright 1999-2026 The MITRE Corporation. Used under the CVE Program. CVE® is a registered trademark of The MITRE Corporation.
- CVSS / CWE
- National Vulnerability Database (NVD), shown unmodified. This product uses the NVD API but is not endorsed or certified by the NVD.
- VulnCrest content
- Summary, remediation guidance and page layout © VulnCrest. Not sourced from NVD.