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CVE-2026-81649— Fundiin <= 3.4.0 - Unauthenticated Payment Gateway Settings Update and Credential Disclosure

Quick assessment

Affected
Unknown Fundiin cho WooCommerce
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.

Fundiin cho WooCommerce WordPress 插件（3.4.0 及以下版本）在多个 REST API 路由上缺乏适当的权限验证机制，而是依赖于每个安装实例中均相同的固定凭据。这一缺陷允许未认证的攻击者泄露商店的支付凭据和客户订单数据、篡改支付网关配置以将资金导向其他账户，并将未付款订单标记为已付款。同样的权限缺失还允许攻击者在某个字段中存储任意脚本，而该字段在经典结账页面中以未转义方式输出，从而导致在未使用基于区块的结账功能的商店中发生未认证的存储型跨站脚本（XSS）漏洞。

AI Predicted 8.1 Difficulty: Easy EPSS 0.29% · P20

Affected Version Matrix 1

VendorProduct Version RangeStatus
Unknown Fundiin cho WooCommerce ≤ 3.4.0 affected
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I. Basic Information for CVE-2026-81649

Vulnerability Information
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Vulnerability Title
Fundiin <= 3.4.0 - Unauthenticated Payment Gateway Settings Update and Credential Disclosure
Source: CVE Program / CVE List V5
Vulnerability Description
The Fundiin cho WooCommerce WordPress plugin through 3.4.0 does not have proper authorisation on several of its REST API routes, relying instead on a credential that is identical on every installation, allowing unauthenticated attackers to disclose the store's payment credentials and customer order data, overwrite the payment gateway configuration so that payments are credited elsewhere, and mark unpaid orders as paid. The same missing authorisation also allows arbitrary script to be stored in a field which is output unescaped on the classic checkout, leading to unauthenticated stored XSS on stores that do not use the block-based checkout.
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 Fundiin cho WooCommerce 0 ~ 3.4.0 -

II. Public POCs for CVE-2026-81649

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III. Intelligence Information for CVE-2026-81649

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Same Patch Batch · Unknown · 2026-10-11 · 63 CVEs total

CVE-2026-84252 click5 CRM add-on to WPForms <= 1.0.3 - Unauthenticated Arbitrary Options Update
CVE-2026-104680 Envira Gallery < 1.16.2 - Multisite Subsite Admin+ Arbitrary Plugin Installation via Onboa
CVE-2026-104681 Envira Gallery < 1.16.2 - Author+ Non-Public Post Title and Excerpt Disclosure via Gallery
CVE-2026-104682 Envira Gallery < 1.16.2 - Contributor Missing Authorization via Convert Gallery REST Route
CVE-2026-104028 Anton Extensions <= 1.2.2 - Unauthenticated Arbitrary File Upload to RCE
CVE-2026-81155 Robo Gallery < 5.2.6 - Author+ Stored XSS via Gallery Search Label
CVE-2026-81154 Robo Gallery < 5.2.6 - Author+ Stored XSS via Image Alt Text
CVE-2026-81420 Tcard WP <= 1.8.0 - Unauthenticated SQLi via group_id Parameter
CVE-2026-81156 Robo Gallery < 5.2.6 - Contributor+ Stored XSS via Gallery Settings
CVE-2026-84251 click5 CRM add-on to Ninja Forms <= 1.0.1 - Unauthenticated Arbitrary Options Update
CVE-2026-14854 WooCommerce Bookings < 3.11.0 - Unauthenticated Denial of Service
CVE-2026-84260 click5 CRM add-on to Gravity Forms <= 1.0.3 - Unauthenticated Stored XSS via post_notifica
CVE-2026-84259 click5 CRM add-on to WPForms <= 1.0.3 - Unauthenticated Stored XSS via post_notifications
CVE-2026-84253 click5 CRM add-on to Gravity Forms <= 1.0.3 - Unauthenticated Arbitrary Options Update
CVE-2026-84261 click5 CRM add-on to Contact Form 7 <= 1.0.4 - Unauthenticated Stored XSS via post_notific
CVE-2026-84254 click5 CRM add-on to Contact Form 7 <= 1.0.4 - Unauthenticated Arbitrary Options Update
CVE-2026-84258 click5 CRM add-on to Ninja Forms <= 1.0.1 - Unauthenticated Stored XSS via post_notificati
CVE-2026-84737 Freeton WP <= 1.0.0 - Unauthenticated Account Takeover via 'secod' Parameter
CVE-2026-84734 Mindstien Quick Login <= 1.0 - Unauthenticated Administrator Account Takeover via 'mql_pas
CVE-2026-85121 Insurify <= 1.0 - Unauthenticated Arbitrary Option Creation and Overwrite via saveemailtem

Showing top 20 of 63 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same vendor: Unknown

V. Comments for CVE-2026-81649

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