CVE-2026-81740
Paytm Payment Gateway < 2.8.9 - Unauthenticated Order Status Manipulation via Payment Callback
Unknown Paytm Payment GatewayNetwork & edge
CVSS
5.3MediumExploitationNo known exploitationNot in CISA KEV, which does not prove it is unexploitedCISA KEV
Exploit odds (EPSS)0.18%Chance of exploitation activity in the next 30 days, higher than 7% of CVEs. Scored 23 Oct 2026FIRST EPSS
What fixes it
- 2.8.9Paytm Payment GatewayCVE List
A fixed version on one release line is not the upgrade target for every line. Check your exact version and any vendor backports.
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.
Text from CVE List
Affected versions 1
- Paytm Payment Gatewayaffected: all versions before 2.8.9CVE List