CVE-2026-16738 Conekta Payment Gateway < 6.2.2 - Unauthenticated Order Payment Completion via Webhook Forgery
Unauthenticated attackers can forge webhooks to mark arbitrary orders as paid without actual payment, compromising financial integrity.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-16738?
CVE-2026-16738 is a medium-severity vulnerability in Unknown Conekta Payment Gateway, published on 22 Aug 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
The Conekta Payment Gateway WordPress plugin before 6.2.2 does not verify the authenticity of incoming payment gateway webhook notifications, nor bind the confirmed payment to the targeted order or verify its amount, allowing unauthenticated attackers to mark arbitrary orders as paid without payment.
Weakness: CWE-284
Which versions are affected by CVE-2026-16738?
How do I fix CVE-2026-16738?
No fix has been published for CVE-2026-16738 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-16738 being exploited?
There is no known exploitation of CVE-2026-16738 in the wild and no public exploit code.
Sources
Also known as GHSA-4vwp-q9wh-xxq2.