Paytm Payment Gateway < 2.8.9 - Unauthenticated Order Status Manipulation via Payment Callback
CVE-2026-81740
Currently unrated
Key Information:
- Vendor
WordPress
- Status
- Vendor
- CVE Published:
- 2 October 2026
Badges
👾 Exploit Exists🟡 Public PoC
What is CVE-2026-81740?
The Paytm Payment Gateway WordPress plugin before 2.8.9 does not verify that payment callbacks genuinely originate from the payment provider when its secret key has not been configured, which is its state immediately after activation, allowing unauthenticated attackers to change the status of arbitrary orders, including marking unpaid orders as paid and reducing stock.
Affected Version(s)
Paytm Payment Gateway 0 < 2.8.9
Exploit Proof of Concept (PoC)
PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.