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CVE-2026-9027

MEDIUM 5.3 CVSS 3.1
Published
July 9, 2026
Last modified
July 9, 2026
NVD status
Deferred
Reported by
security@wordfence.com
Weakness
CWE-347
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

Description

The CorvusPay WooCommerce Payment Gateway plugin for WordPress is vulnerable to Payment Bypass via Improper Verification of Cryptographic Signature in all versions up to, and including, 2.7.4. The `corvuspay_success_handler` function registers the REST endpoint `POST /wp-json/corvuspay/success/` with `'permission_callback' => '__return_true'`, and while it calls `$this->client->validate->signature()` and stores the boolean result in `$res`, the result is never evaluated in a conditional — it is only written to the debug log — causing execution to unconditionally reach `$order->payment_complete()` regardless of whether the cryptographic signature is valid. This makes it possible for unauthenticated attackers to mark any pending WooCommerce order as fully paid by sending a POST request to the success endpoint containing an arbitrary or forged signature value, allowing them to obtain goods or services without payment. Because WooCommerce order IDs are sequential integers, target orders are trivially enumerable via the `order_number` POST parameter, requiring no prior knowledge of the victim order.

Affected WordPress components

  • CorvusPay WooCommerce Payment Gateway Plugin · corvuspay-woocommerce-integration
    Confirmed match Active
    Up to and including 2.7.4
    View on WordPress.org

A confirmed match is backed by the plugin or theme slug. A possible match is based on the product name only and should be verified.

Affected products and versions

  • corvusinfo CorvusPay WooCommerce Payment Gateway — Up to and including 2.7.4

References

  • plugins.trac.wordpress.org https://plugins.trac.wordpress.org/browser/corvuspay-woocommerce-integration/tags/2.7.2/includes/class-wc-gateway-corvuspay.php#L202
  • plugins.trac.wordpress.org https://plugins.trac.wordpress.org/browser/corvuspay-woocommerce-integration/tags/2.7.2/includes/class-wc-gateway-corvuspay.php#L656
  • plugins.trac.wordpress.org https://plugins.trac.wordpress.org/browser/corvuspay-woocommerce-integration/tags/2.7.2/includes/class-wc-order-corvuspay.php#L188
  • plugins.trac.wordpress.org https://plugins.trac.wordpress.org/browser/corvuspay-woocommerce-integration/tags/2.7.4/includes/class-wc-gateway-corvuspay.php#L202
  • plugins.trac.wordpress.org https://plugins.trac.wordpress.org/browser/corvuspay-woocommerce-integration/tags/2.7.4/includes/class-wc-gateway-corvuspay.php#L656
  • plugins.trac.wordpress.org https://plugins.trac.wordpress.org/browser/corvuspay-woocommerce-integration/tags/2.7.4/includes/class-wc-order-corvuspay.php#L188
  • plugins.trac.wordpress.org https://plugins.trac.wordpress.org/changeset?reponame=&old=3576949%40corvuspay-woocommerce-integration&new=3576949%40corvuspay-woocommerce-integration
  • www.wordfence.com https://www.wordfence.com/threat-intel/vulnerabilities/id/3bc9f344-b605-4257-8d77-e073f85fe344?source=cve
  • nvd.nist.gov Official NVD record