CVE-2026-11896— My Calendar <= 3.7.14 - Insecure Direct Object Reference to Unauthenticated Sensitive Information Disclosure via 'vcal' Parameter
Possible ATT&CK Techniques 1AI
T1530 · Data from Cloud StorageAffected Version Matrix 1
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| joedolson | My Calendar – Accessible Event Manager | ≤ 3.7.14 | affected |
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I. Basic Information for CVE-2026-11896
Vulnerability Information
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Vulnerability Title
My Calendar <= 3.7.14 - Insecure Direct Object Reference to Unauthenticated Sensitive Information Disclosure via 'vcal' Parameter
Source: NVD (National Vulnerability Database)
Vulnerability 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.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
Source: NVD (National Vulnerability Database)
Vulnerability Type
通过用户控制密钥绕过授权机制
Source: NVD (National Vulnerability Database)
Vulnerability Title
Joe Dolson My Calendar 授权问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
joedolson My Calendar – Accessible Event Manager是joedolson的事件管理器插件。 Joe Dolson My Calendar 3.7.14及之前版本存在授权问题漏洞，该漏洞源于通过'vcal'参数缺少对用户控制密钥的验证，存在不安全的直接对象引用，可能导致未经身份验证的攻击者枚举事件ID并访问非公开、草稿、已删除和个人日历事件的完整iCalendar导出，泄露敏感事件元数据。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| joedolson | My Calendar – Accessible Event Manager | 0 ~ 3.7.14 | - |
II. Public POCs for CVE-2026-11896
| # | POC Description | Source Link | Shenlong Link |
|---|
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Patches & Fixes for CVE-2026-11896 (6)
News Coverage for CVE-2026-11896 (1)
Vendor Pages for CVE-2026-11896 (1)
Other References for CVE-2026-11896 (2)
IV. Related Vulnerabilities
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