Vulnerability · Published Oct 1, 2026 · Assigned by WPScan

CVE-2026-81739Paytm Payment Gateway < 2.8.9 - Unauthenticated Stored XSS via Payment Callback

High 7.5

In plain English

A high-severity cross-site scripting in Paytm Payment Gateway from Unknown. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 12% of all known vulnerabilities).

Severity (CVSS 3.1)7.5High

Exploit odds (30 days)0.2%top 87.8% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official description

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 products (as reported)

Vendor	Product	Versions
Unknown	Paytm Payment Gateway	0 – before 2.8.9

Weakness: CWE-79 · Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H

References

https://wpscan.com/vulnerability/f77f3f04-cb98-4687-9080-dd0c99a7e926/ exploit, vdb-entry, technical-description