CVE-2026-81740

Paytm Payment Gateway < 2.8.9 - Unauthenticated Order Status Manipulation via Payment Callback

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

Paytm Payment Gateway

CVSS v3.1 CNA

5.3 MEDIUMCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

EPSS

0.18% chance of exploitation in the next 30 days, 7th percentile

Published

2026-10-02

Proof-of-concept exploits (1)

• https://wpscan.com/vulnerability/13767875-5010-494a-b3ed-133d58b8ecea/

References

• CVE Record
• NVD entry