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CVE-2026-76586— BookingPress 1.5.6 - 1.6.2 - Unauthenticated Booking Price Manipulation via PayPal Payment Confirmation

Quick assessment

Affected
Unknown Appointment Booking Calendar Plugin and Scheduling Plugin
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 插件 “Appointment Booking Calendar Plugin and Scheduling Plugin” 在 1.6.3 版本之前，在确认在线支付时未将用户实际支付金额与服务器端为预约所设定的价格进行校验，导致未认证用户能够以远低于原定的价格获得付费预约的批准。

AI Predicted 6.5 Difficulty: Trivial EPSS 0.36% · P28

Possible ATT&CK Techniques 1 AI

T1557 · Adversary-in-the-Middle

Affected Version Matrix 1

VendorProduct Version RangeStatus
Unknown Appointment Booking Calendar Plugin and Scheduling Plugin 1.5.6< 1.6.3 affected
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I. Basic Information for CVE-2026-76586

Vulnerability Information
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Vulnerability Title
BookingPress 1.5.6 - 1.6.2 - Unauthenticated Booking Price Manipulation via PayPal Payment Confirmation
Source: CVE Program / CVE List V5
Vulnerability Description
The Appointment Booking Calendar Plugin and Scheduling Plugin WordPress plugin before 1.6.3 does not verify the amount actually paid against the server-side price staged for a booking when confirming an online payment, allowing unauthenticated users to have a paid appointment approved for a fraction of its price.
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 Appointment Booking Calendar Plugin and Scheduling Plugin 1.5.6 ~ 1.6.3 -

II. Public POCs for CVE-2026-76586

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III. Intelligence Information for CVE-2026-76586

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Other References for CVE-2026-76586 (1)

Same Patch Batch · Unknown · 2026-08-29 · 26 CVEs total

CVE-2026-76547 Profile Builder < 4.0.1 - Admin+ PHP Object Injection via Import/Export
CVE-2026-81200 MasterStudy LMS < 3.7.42 - Instructor+ Cross-Tenant Order Billing PII Disclosure via IDOR
CVE-2026-81342 MasterStudy LMS < 3.7.43 - Unauthenticated Open Redirect
CVE-2026-81346 Frontend Admin by DynamiApps < 3.29.11 - Subscriber+ Arbitrary Membership Plan Deletion
CVE-2026-81026 MasterStudy LMS < 3.7.40 - Unauthenticated Payment Bypass via PayPal IPN
CVE-2026-80311 Stripe Payment Forms by WP Full Pay < 8.5.5 - Cross-Customer Subscription Cancellation via
CVE-2026-80488 WP Ultimate CSV Importer < 9.0 - Admin+ SQLi via AIOSEO Import Fields
CVE-2026-77704 Amelia 1.2.32 - 2.4.8 - Amelia Customer+ Appointment Status Update and Self-Approval
CVE-2026-77786 Rank Math SEO < 1.0.277 - Editor+ Core Settings Modification via fix-site-seo Ability
CVE-2026-77010 HEL Online Classroom: AI-powered Online Classrooms <= 1.0.3 - Unauthenticated Moderator Jo
CVE-2026-77012 Icollect <= 1.0.0 - Unauthenticated Arbitrary File Read, SSRF and Path Traversal File Writ
CVE-2026-77008 HEL Online Classroom: AI-powered Online Classrooms <= 1.0.3 - Unauthenticated Plugin Setti
CVE-2026-77007 HEL Online Classroom: AI-powered Online Classrooms <= 1.0.3 - Unauthenticated BigBlueButto
CVE-2026-16259 Uix UserCenter <= 1.0.3 - Unauthenticated Privilege Escalation
CVE-2026-76548 Profile Builder < 4.0.1 - Unauthenticated Unpublished Content and Media Modification via F
CVE-2026-17520 Newsletters < 4.17 - Unauthenticated API Access via Predictable API Key
CVE-2026-17522 Newsletters < 4.17 - Arbitrary Plugin Option Update via CSRF
CVE-2026-76546 Profile Builder < 4.0.1 - Contributor+ Stored XSS via Format Date Shortcode
CVE-2026-19430 CatFolders Document Gallery Pro < 2.0.7 - Unauthenticated Missing Authorization via downlo
CVE-2026-18234 MStore API < 4.21.1 - Subscriber+ Arbitrary Order Payment Bypass via Wallet

Showing top 20 of 26 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Appointment Booking Calendar Plugin and Scheduling Plugin
Same vendor: Unknown

V. Comments for CVE-2026-76586

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