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CVE-2026-86839— Bookly < 28.3 - Staff+ Appointment and Payment Disclosure, Modification and Deletion via IDOR

Quick assessment

Affected
Unknown Online Scheduling and Appointment Booking System
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.

在28.3版本之前的“在线日程安排与预约预订系统”WordPress插件中，未经验证请求通过其员工角色AJAX动作所获取的预约和支付记录是否属于发出请求的员工，这使得拥有员工级别账户的已认证攻击者可以查看、修改和删除其他员工的预约和支付信息，包括相关客户的个人信息。

AI Predicted 7.5 Difficulty: Easy EPSS 0.13% · P2
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I. Basic Information for CVE-2026-86839

Vulnerability Information
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Vulnerability Title
Bookly < 28.3 - Staff+ Appointment and Payment Disclosure, Modification and Deletion via IDOR
Source: CVE Program / CVE List V5
Vulnerability Description
The Online Scheduling and Appointment Booking System WordPress plugin before 28.3 does not verify that appointment and payment records requested through its staff-role AJAX actions belong to the requesting staff member, allowing authenticated attackers with a staff-level account to view, modify and delete other staff members' appointments and payments, including the associated customer's personal information.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
Unknown Online Scheduling and Appointment Booking System 0 ~ 28.3 -

II. Public POCs for CVE-2026-86839

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III. Intelligence Information for CVE-2026-86839

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Other References for CVE-2026-86839 (1)

Same Patch Batch · Unknown · 2026-09-27 · 19 CVEs total

CVE-2026-89006 WPeMatico RSS Feed Fetcher < 2.8.27 - Contributor+ Stored XSS via Feed Import
CVE-2026-84069 WebFacing Email Accounts for cPanel 5.3 - 5.3.6 - Unauthenticated LFI via assets/index.php
CVE-2026-81655 Ad Inserter 2.8.12 - 2.8.18 - Subscriber+ RCE / Stored XSS via Global Custom Fields
CVE-2026-82841 UpdraftPlus 1.23.8 - 1.26.7 - Subscriber+ Remote Storage Credential Disclosure via Migrati
CVE-2026-85002 EmbedPress < 4.6.7 - Contributor+ Stored XSS via Instagram Carousel Block Attributes
CVE-2026-86609 Download Manager Pro < 7.5.6 - Unauthenticated Stored XSS via Email Lock Subscription
CVE-2026-86841 Bookly 23.2 - 28.2 - Bookly Administrator+ PHP Object Injection via Diagnostics Advanced O
CVE-2026-89001 WPeMatico RSS Feed Fetcher < 2.8.27 - Contributor+ Post Publication and Author Spoofing vi
CVE-2026-89003 WPeMatico RSS Feed Fetcher < 2.8.27 - Contributor+ SSRF via Campaign Preview
CVE-2026-96899 Optima Express 8.6.0 - 8.7.5 - Author+ Stored XSS via faq_script
CVE-2026-89000 WPeMatico RSS Feed Fetcher < 2.8.27 - Contributor+ SSRF via Campaign Run
CVE-2026-96896 Malcure Malware Shield < 19.9.7 - Multisite Subsite Admin+ Arbitrary File Write and Deleti
CVE-2026-96897 Optima Express 8.5.0 - 8.7.5 - Unauthenticated Author Account Creation & Application Passw
CVE-2026-96895 WP YouTube Lyte < 1.7.31 - Contributor+ Stored XSS via Embed Block Attributes
CVE-2026-92995 Verge3D <= 4.13.0 - Unauthenticated Product Download Disclosure via v3d_download_file
CVE-2026-92436 Mailchimp for WooCommerce < 6.3 - Unauthenticated Customer Email and Cart Disclosure via I
CVE-2026-97319 PowerPress < 11.17.2 - Contributor+ Stored XSS via Podcast Player Block
CVE-2026-97227 NextScripts: Social Networks Auto-Poster < 4.4.8 - Authenticated Social Account Credential

IV. Related Vulnerabilities

Same product: Online Scheduling and Appointment Booking System
Same vendor: Unknown

V. Comments for CVE-2026-86839

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