CVE-2026-81739

Paytm Payment Gateway < 2.8.9 - Unauthenticated Stored XSS via Payment Callback

The Paytm Payment Gateway WordPress plugin before 2.8.9 does not sanitize and escape data it stores from payment callbacks before outputting it in an admin page, and the integrity check on those callbacks can be forged when the gateway is enabled without credentials, allowing unauthenticated users to store scripts that will run in the session of a store administrator.

Affected

Paytm Payment Gateway

CVSS v3.1 CNA

7.5 HIGHCVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H

EPSS

0.22% chance of exploitation in the next 30 days, 11th percentile

Published

2026-10-01

Proof-of-concept exploits (1)

• https://wpscan.com/vulnerability/f77f3f04-cb98-4687-9080-dd0c99a7e926/

References

• CVE Record
• NVD entry