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.
CVE-2026-81739
Primary source · Revision 1
Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.
Security context
Source reference: cve:CVE-2026-81739
Paytm Payment Gateway
Source reference: /containers/cna/affected/0/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Structured affected-version data
Original package identities and version rules from this source.
[
{
"vendor": "Unknown",
"product": "Paytm Payment Gateway",
"versions": [
{
"status": "affected",
"version": "0",
"lessThan": "2.8.9",
"versionType": "semver"
}
],
"defaultStatus": "unaffected"
}
]- Related CVEs
- CVE-2026-81739
Source reference:
/cveMetadata/cveId
Publisher severity
No explicit severity was provided.
- Event
- #5100 · Revision 1
- Added to Heist Feed
- Publisher date