---
id: CVE-2026-103310
title: >-
  PayHere Payment Gateway 2.4.0 - 2.4.5 - Unauthenticated Payment Bypass via
  Unverified Payment Notification
summary: >-
  The PayHere Payment Gateway WordPress plugin from 2.4.0 through 2.4.5 does not
  verify the authenticity of payment notifications when the merchant secret is
  unset, which is the default state, allowing unauthenticated attackers to forge
  a …
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'
cvssSource: cna
cwe:
  - CWE-345
product: PayHere Payment Gateway
affected:
  - payhere_payment_gateway >= 2.4.0 <= 2.4.5
ssvc:
  exploitation: none
  automatable: 'yes'
  technicalImpact: partial
  timestamp: '2026-11-02T21:20:19.116103Z'
published: '2026-11-02'
updated: '2026-11-02'
sourceUpdated: '2026-11-02T21:20:32.860Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-103310'
references:
  - url: 'https://wpscan.com/vulnerability/f3b66147-5910-4901-b595-12a5b1db5f8b/'
tags:
  - cve.org
epss: 0.00114
epssPercentile: 0.01514
ingestedAt: '2026-11-05T19:30:42.857Z'
---

## Overview

The PayHere Payment Gateway WordPress plugin from 2.4.0 through 2.4.5 does not verify the authenticity of payment notifications when the merchant secret is unset, which is the default state, allowing unauthenticated attackers to forge a payment confirmation and mark any order as paid without payment.

## Affected

- `payhere_payment_gateway >= 2.4.0 <= 2.4.5`

## Remediation

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