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CVE-2026-81422— Advanced Appointment Booking & Scheduling < 2.7 - Unauthenticated Arbitrary User Registration

Quick assessment

Affected
Unknown Advanced Appointment Booking & Scheduling
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 2.7 版本之前的 Advanced Appointment Booking & Scheduling WordPress 插件，在通过公开可访问的短代码创建账户时，未验证站点的用户注册设置。这允许未认证的攻击者注册任意用户账户并自动登录，即使该站点已禁用用户注册功能。

AI Predicted 8.8 Difficulty: Trivial

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application
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I. Basic Information for CVE-2026-81422

Vulnerability Information
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Vulnerability Title
Advanced Appointment Booking & Scheduling < 2.7 - Unauthenticated Arbitrary User Registration
Source: CVE Program / CVE List V5
Vulnerability Description
The Advanced Appointment Booking & Scheduling WordPress plugin before 2.7 does not verify the site's user-registration setting before creating accounts through a publicly accessible shortcode, allowing unauthenticated attackers to register arbitrary user accounts, and be automatically logged in, even when user registration is disabled on the site.
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 Advanced Appointment Booking & Scheduling 0 ~ 2.7 -

II. Public POCs for CVE-2026-81422

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III. Intelligence Information for CVE-2026-81422

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Other References for CVE-2026-81422 (1)

Same Patch Batch · Unknown · 2026-11-09 · 23 CVEs total

CVE-2026-115252 10.0 CRITICAL Confection 0.4.0 - 0.4.7 - Unauthenticated RCE via Write Key Option
CVE-2026-106466 7.5 HIGH JWT Auth <= 3.0.2 - Unauthenticated Account Access Persistence via Insufficient Refresh To
CVE-2026-106008 5.3 MEDIUM FraudLabs Pro SMS Verification 1.11.2 - 1.12.1 - Unauthenticated SMS Verification Bypass v
CVE-2026-115204 AZEXO Store Locator <= 1.4 - Subscriber+ Arbitrary File Write via azt_items_import
CVE-2026-115237 Grand Job <= 1.2.1 - Unauthenticated Account Takeover via Empty Password Reset Code
CVE-2026-115213 EASY-JS-WPAPI <= 2.0 - Unauthenticated Administrator Password Disclosure and Authenticatio
CVE-2026-115212 mView <= 1.0.3 - Subscriber+ Arbitrary File Upload
CVE-2026-115256 Mail Debug for WooCommerce <= 1.3.0 - Unauthenticated Sent Email Disclosure Leading to Acc
CVE-2026-120409 All-in-One Video Gallery < 5.1.1 - Unauthenticated Password-Protected Video Disclosure via
CVE-2026-118201 Limit Login Attempts Reloaded 3.0.0 - 3.4.0 - Two-Factor Authentication Bypass via XML-RPC
CVE-2026-118202 Limit Login Attempts Reloaded < 3.4.1 - Two-Factor Authentication Bypass via Malformed X-F
CVE-2026-121759 Fusion Page Builder < 1.7.1 - Contributor+ Arbitrary Post Trashing via IDOR
CVE-2026-121874 Post Duplicator < 3.0.18 - Admin+ Arbitrary Option Update via Unvalidated Option Name
CVE-2026-123091 Vigilant < 2.11.0 - 2FA Bypass via Third-Party Login Forms
CVE-2026-123064 WP BASE Booking of Appointments, Services and Events 6.5.0 - Subscriber+ Privilege Escalat
CVE-2026-123088 UniPAY Payment Gateway For WooCommerce < 2.4 - Unauthenticated Order Key and Customer PII
CVE-2026-123128 GemBooking < 1.7.1 - Unauthenticated Team Member Double-Booking via Cross-Object Race Cond
CVE-2026-121875 Post Duplicator < 3.0.18 - Admin+ Privilege Escalation via Unvalidated Capability Assignme
CVE-2026-123129 Event Tickets Manager for WooCommerce 1.5.4 - 1.5.9 - Unauthenticated Site-wide Event Tick
CVE-2026-123131 GemBooking < 1.7.1 - Staff+ Arbitrary Post Deletion and Site Settings Update via REST Cont

Showing top 20 of 23 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Advanced Appointment Booking & Scheduling
Same vendor: Unknown