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CVE-2026-11966— User Registration & Membership < 5.2.3 - Unauthenticated Limited User Deletion via Stripe Subscription Handler

Quick assessment

Affected
Unknown User Registration & Membership
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 User Registration & Membership是WordPress基金会的一个用户注册与会员管理软件。 WordPress User Registration & Membership 5.2.3之前版本存在授权问题漏洞，该漏洞源于对未经身份验证的调用者未执行功能检查并使用调用者提供的用户标识，可能导致未经身份验证的攻击者删除最近注册、待付款的用户账户。

AI Predicted 7.5 Difficulty: Easy EPSS 0.30% · P21

Affected Version Matrix 1

VendorProduct Version RangeStatus
Unknown User Registration & Membership 4.2.3< 5.2.3 affected
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I. Basic Information for CVE-2026-11966

Vulnerability Information
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Vulnerability Title
User Registration & Membership < 5.2.3 - Unauthenticated Limited User Deletion via Stripe Subscription Handler
Source: CVE Program / CVE List V5
Vulnerability Description
The User Registration & Membership WordPress plugin before 5.2.3 does not perform a capability check for unauthenticated callers on one of its membership payment actions and acts on a caller-supplied user identifier, allowing unauthenticated attackers to delete recently-registered, payment-pending user accounts.
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
Vulnerability Title
WordPress User Registration & Membership 授权问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
WordPress User Registration & Membership是WordPress基金会的一个用户注册与会员管理软件。 WordPress User Registration & Membership 5.2.3之前版本存在授权问题漏洞，该漏洞源于对未经身份验证的调用者未执行功能检查并使用调用者提供的用户标识，可能导致未经身份验证的攻击者删除最近注册、待付款的用户账户。
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
Unknown User Registration & Membership 4.2.3 ~ 5.2.3 -

II. Public POCs for CVE-2026-11966

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III. Intelligence Information for CVE-2026-11966

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Vendor Advisories for CVE-2026-11966 (1)

Same Patch Batch · Unknown · 2026-07-17 · 7 CVEs total

CVE-2026-9810 AI Chatbot & Workflow Automation by AIWU < 1.5.4 - Unauthenticated Privilege Escalation vi
CVE-2026-13402 Royal Elementor Addons < 1.7.1063 - Unauthenticated Private Mega Menu Template Disclosure
CVE-2026-11961 User Registration & Membership < 5.2.3 - Unauthenticated Privilege Escalation via Unbound
CVE-2026-11575 PhonePe Payment Solutions < 3.1.0 - Unauthenticated Payment Bypass via Forged Callback
CVE-2026-10525 NEX-Forms < 9.2.3 - Unauthenticated Stored XSS via Form Submission
CVE-2026-12393 WPS Bookings for WooCommerce < 3.11.7 - Subscriber+ Arbitrary Booking Order Cancellation v

IV. Related Vulnerabilities

Same product: User Registration & Membership
Same vendor: Unknown

V. Comments for CVE-2026-11966

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