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CVE-2026-11880— Fluent Forms < 6.2.1 - Subscriber+ Subscription Cancellation via IDOR

Quick assessment

Affected
Unknown Fluent Forms
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.

WPManageNinja Fluent Forms是WPManageNinja公司的一款Web组件构建工具。 WPManageNinja Fluent Forms 6.2.1之前版本存在授权问题漏洞，该漏洞源于在处理订阅取消请求前未正确验证所有权，可能导致低权限的已认证用户取消其他用户的订阅。

AI Predicted 5.4 Difficulty: Moderate EPSS 0.21% · P10

Affected Version Matrix 1

VendorProduct Version RangeStatus
Unknown Fluent Forms < 6.2.1 affected
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I. Basic Information for CVE-2026-11880

Vulnerability Information
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Vulnerability Title
Fluent Forms < 6.2.1 - Subscriber+ Subscription Cancellation via IDOR
Source: CVE Program / CVE List V5
Vulnerability Description
The Fluent Forms WordPress plugin before 6.2.1 does not properly verify ownership before processing a subscription cancellation request, allowing authenticated users with a low-privilege account to cancel subscriptions belonging to other users.
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
WPManageNinja Fluent Forms 授权问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
WPManageNinja Fluent Forms是WPManageNinja公司的一款Web组件构建工具。 WPManageNinja Fluent Forms 6.2.1之前版本存在授权问题漏洞，该漏洞源于在处理订阅取消请求前未正确验证所有权，可能导致低权限的已认证用户取消其他用户的订阅。
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 Fluent Forms 0 ~ 6.2.1 -

II. Public POCs for CVE-2026-11880

# POC Description Source Link Shenlong Link
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III. Intelligence Information for CVE-2026-11880

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Vendor Advisories for CVE-2026-11880 (1)

Same Patch Batch · Unknown · 2026-07-01 · 8 CVEs total

CVE-2026-11568 Product Configurator for WooCommerce < 1.7.3 - Unauthenticated Private/Draft Product Data
CVE-2026-11562 WS Form LITE < 1.11.8 - Subscriber+ Arbitrary Settings Update
CVE-2026-11570 User Submitted Posts < 20260608 - Unauthenticated Stored XSS via Author Name
CVE-2026-11794 Advanced Form Integration < 2.1.1 - Unauthenticated Privilege Escalation via Breakdance Fo
CVE-2026-10750 Royal MCP < 1.4.26 - Subscriber+ Insufficient Authorization in MCP Tools
CVE-2026-11887 Salon Booking System < 10.30.20 - Subscriber+ Booking Approval Bypass
CVE-2026-11883 WebAuthn Provider for Two Factor < 2.5.6 - 2FA Bypass

IV. Related Vulnerabilities

Same product: Fluent Forms
Same vendor: Unknown

V. Comments for CVE-2026-11880

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