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CVE-2026-109368— WP Booking System <= 2.1.0.3 - Missing Authorization to Authenticated (Subscriber+) Sensitive Information Exposure via wpbs_refresh_calendar_editor AJAX action

Quick assessment

Affected
murgroland WP Booking System – Booking Calendar
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

WordPress 的"WP Booking System – Booking Calendar"插件在所有 2.1.0.3 及之前的版本中存在敏感信息泄露漏洞，该漏洞通过"id"参数触发。这使得拥有订阅者级别及以上权限的已认证攻击者能够提取由站点管理的任意日历中每个事件的私有预订描述和预订 ID。

CVSS 6.5 · Medium EPSS 0.26% · P17

Possible ATT&CK Techniques 1 AI

T1040 · Network Sniffing

Affected Version Matrix 1

VendorProduct Version RangeStatus
murgroland WP Booking System – Booking Calendar ≤ 2.1.0.3 affected
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I. Basic Information for CVE-2026-109368

Vulnerability Information
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Vulnerability Title
WP Booking System <= 2.1.0.3 - Missing Authorization to Authenticated (Subscriber+) Sensitive Information Exposure via wpbs_refresh_calendar_editor AJAX action
Source: CVE Program / CVE List V5
Vulnerability Description
The WP Booking System – Booking Calendar plugin for WordPress is vulnerable to Sensitive Information Exposure in all versions up to, and including, 2.1.0.3 via the 'id' parameter. This makes it possible for authenticated attackers, with subscriber-level access and above, to extract private per-event booking descriptions and booking IDs from any calendar managed by the site.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
授权机制缺失
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
murgroland WP Booking System – Booking Calendar 0 ~ 2.1.0.3 -

II. Public POCs for CVE-2026-109368

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III. Intelligence Information for CVE-2026-109368

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Patches & Fixes for CVE-2026-109368 (2)

Vendor Pages for CVE-2026-109368 (3)

Other References for CVE-2026-109368 (2)

Same Patch Batch · murgroland · 2026-10-17 · 3 CVEs total

CVE-2026-108123 7.5 HIGH WP Booking System <= 2.1.0.3 - Missing Authorization to Unauthenticated Sensitive Informat
CVE-2026-109369 6.8 MEDIUM WP Booking System <= 2.1.0.3 - Missing Authorization to Authenticated (Subscriber+) Privil

IV. Related Vulnerabilities

Same product: WP Booking System – Booking Calendar
Same vendor: murgroland
Same weakness: CWE-862

V. Comments for CVE-2026-109368

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