---
id: CVE-2026-81740
title: >-
  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, al…
summary: >-
  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, al…
severity: medium
cvss: 5.3
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N'
cwe:
  - CWE-287
product: Paytm Payment Gateway
affected:
  - paytm_payment_gateway < 2.8.9
published: '2026-10-02'
updated: '2026-10-02'
sourceUpdated: '2026-10-02T18:00:34.733'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-81740'
references:
  - url: 'https://wpscan.com/vulnerability/13767875-5010-494a-b3ed-133d58b8ecea/'
    label: contact@wpscan.com
tags:
  - nvd
  - cve.org
epss: 0.00136
epssPercentile: 0.02561
ssvc:
  exploitation: none
  automatable: 'yes'
  technicalImpact: partial
  timestamp: '2026-10-02T10:47:44.732276Z'
ingestedAt: '2026-10-02T06:11:20.482Z'
---

## Overview

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.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.