What’s Vulnerable › Vulnerabilities
CVE-2026-81740: Paytm Payment Gateway < 2.8.9 - Unauthenticated Order Status Manipulation via Payment Callback
- Severity: medium (CVSS 5.3 v3.1)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 0.2% probability of exploitation in the next 30 days
- Public exploit or detection template: none known
- Published: 2026-10-02 · updated 2026-10-02
- Weakness: CWE-287
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.
Affected products
- Paytm Payment Gateway: before 2.8.9 — fixed in 2.8.9
How to fix
Upgrade to a fixed version: Paytm Payment Gateway 2.8.9. Check the vendor advisory for mitigations.
References
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