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CVE-2026-103359— PayDunya WooCommerce Payment Gateway 1.1.6 - Unauthenticated Order Payment Completion via Webhook Forgery

Quick assessment

Affected
Unknown PayDunya WooCommerce Payment Gateway
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.

PayDunya WooCommerce Payment Gateway WordPress 插件（1.1.6 及更早版本）未对传入的支付通知进行真实性验证；在网关完成配置之前，该插件会使用由空密钥派生的值对通知进行身份验证，而该值可由任何人计算得出，这使得未经身份验证的攻击者能够将任意 WooCommerce 订单标记为已支付且已完成。

CVSS 5.3 · Medium

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application
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I. Basic Information for CVE-2026-103359

Vulnerability Information
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Vulnerability Title
PayDunya WooCommerce Payment Gateway 1.1.6 - Unauthenticated Order Payment Completion via Webhook Forgery
Source: CVE Program / CVE List V5
Vulnerability Description
The PayDunya WooCommerce Payment Gateway WordPress plugin through 1.1.6 does not verify the authenticity of incoming payment notifications and, until the gateway is configured, authenticates them with a value derived from an empty secret that anyone can compute, allowing unauthenticated attackers to mark arbitrary WooCommerce orders as paid and completed.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
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 PayDunya WooCommerce Payment Gateway 1.1.6 ~ 1.1.6 -

II. Public POCs for CVE-2026-103359

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III. Intelligence Information for CVE-2026-103359

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Other References for CVE-2026-103359 (1)

Same Patch Batch · Unknown · 2026-10-27 · 4 CVEs total

CVE-2026-103325 3.7 LOW TiendaCrypto para WooCommerce 1.0.1 - 1.2.1 - Unauthenticated Order Payment Forgery via We
CVE-2026-103312 Payment Integration Wompi <= 4.0.1 - Unauthenticated Payment Confirmation Forgery via IPN
CVE-2026-103332 Payex Payment Gateway for WooCommerce <= 1.2.10 - Unauthenticated Payment Confirmation For

IV. Related Vulnerabilities

Same vendor: Unknown