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.
CVE-2026-81740
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-2026-81740
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-2026-81740
Source reference:
/cveMetadata/cveId
Publisher severity
No explicit severity was provided.
- Event
- #7860 · Revision 1
- Added to Heist Feed
- Publisher date