CVE-2026-81740
Medium
Description
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.
SeverityMedium
CVSS5.3
Exploit probability—
ProductPaytm Payment Gateway
PublishedOct 2, 2026
First seenOct 2, 2026
Weakness typeCWE-287Improper authentication
How to fix
Update
- Paytm Payment Gateway2.8.9 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| Paytm Payment Gateway | v < 2.8.9 | 2.8.9 |
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