CVE-2026-16738: CWE-284 Improper Access Control in Conekta Payment Gateway
Description
CVE-2026-16738 is a medium severity vulnerability in the Conekta Payment Gateway WordPress plugin before version 6.2.2. The plugin fails to verify the authenticity of incoming webhook notifications from the payment gateway and does not bind confirmed payments to the targeted orders or verify payment amounts. This flaw allows unauthenticated attackers to mark arbitrary orders as paid without actually making a payment.
CVSS v3.1
Score 5.3medium
Affected software
Conekta Payment Gateway
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The Conekta Payment Gateway WordPress plugin versions prior to 6.2.2 contain an improper access control vulnerability (CWE-284). Specifically, the plugin does not authenticate webhook notifications from the payment gateway, nor does it verify that the payment corresponds to the correct order or amount. As a result, attackers can send forged webhook notifications to mark orders as paid without legitimate payment confirmation.
Potential Impact
An attacker can exploit this vulnerability to fraudulently mark orders as paid without completing any actual payment. This can lead to financial loss for merchants using the affected plugin, as they may fulfill orders without receiving payment.
Mitigation Recommendations
Upgrade the Conekta Payment Gateway WordPress plugin to version 6.2.2 or later, where this vulnerability is fixed. No other mitigation steps are indicated. Patch status is confirmed by the existence of fixed version 6.2.2.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- WPScan
- Date Reserved
- 2026-07-23T08:16:28.988Z
- State
- PUBLISHED
Threat ID: 6a893cc5acd9273b49a6fe9c
Added to database: 08/22/2026, 06:08:05 UTC
Last enriched: 09/11/2026, 02:17:48 UTC
Last updated: 10/07/2026, 18:48:17 UTC
Views: 39
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