CVE-2026-87974: CWE-287 Improper Authentication in Asaas Gateway for WooCommerce
Description
The Asaas Gateway for WooCommerce WordPress plugin before 2.7.8 does not properly authenticate its payment webhook, accepting an empty access token in its default configuration and not verifying that the confirmed payment corresponds to the order it marks paid, allowing unauthenticated attackers to mark arbitrary orders as paid.
CVSS v3.1
Score 5.3medium
Affected software
Asaas Gateway for WooCommerce
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-87974 is an improper authentication vulnerability (CWE-287) in the Asaas Gateway for WooCommerce plugin for WordPress versions prior to 2.7.8. The plugin's payment webhook does not properly authenticate requests, accepting empty access tokens in its default configuration. Additionally, it fails to verify that the payment confirmation corresponds to the specific order it updates, enabling unauthenticated attackers to mark arbitrary orders as paid.
Potential Impact
An attacker can exploit this vulnerability to fraudulently mark orders as paid without completing a legitimate payment. This can lead to unauthorized order fulfillment and potential financial loss for merchants using the affected plugin versions.
Mitigation Recommendations
A fix is available in version 2.7.8 of the Asaas Gateway for WooCommerce plugin. Users should upgrade to version 2.7.8 or later to remediate this vulnerability. No additional mitigation guidance is provided by the vendor advisory.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- WPScan
- Date Reserved
- 2026-09-09T18:14:51.337Z
- State
- PUBLISHED
Threat ID: 6acf225a2cdf04f656513bae
Added to database: 10/14/2026, 06:34:02 UTC
Last enriched: 10/14/2026, 06:49:39 UTC
Last updated: 10/14/2026, 19:00:33 UTC
Views: 16
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