iPaymu Payment Gateway for WooCommerce Plugin up to 2.0.2 on WordPress Webhook Endpoint check_ipaymu_response authorization

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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7.6$0-$5k0.00

Summaryinfo

A vulnerability labeled as critical has been found in iPaymu Payment Gateway for WooCommerce Plugin up to 2.0.2 on WordPress. This vulnerability affects the function check_ipaymu_response of the component Webhook Endpoint. The manipulation results in authorization. This vulnerability is cataloged as CVE-2026-0656. The attack may be launched remotely. There is no exploit available.

Detailsinfo

A vulnerability classified as critical has been found in iPaymu Payment Gateway for WooCommerce Plugin up to 2.0.2 on WordPress. Affected is the function check_ipaymu_response of the component Webhook Endpoint. The manipulation with an unknown input leads to a authorization vulnerability. CWE is classifying the issue as CWE-862. The product does not perform an authorization check when an actor attempts to access a resource or perform an action. This is going to have an impact on confidentiality, integrity, and availability. CVE summarizes:

The iPaymu Payment Gateway for WooCommerce plugin for WordPress is vulnerable to Missing Authentication in all versions up to, and including, 2.0.2 via the 'check_ipaymu_response' function. This is due to the plugin not validating webhook request authenticity through signature verification or origin checks. This makes it possible for unauthenticated attackers to mark WooCommerce orders as paid by sending crafted POST requests to the webhook endpoint without any payment occurring, as well as enumerate order IDs and obtain valid order keys via GET requests, exposing customer order PII including names, addresses, and purchased products.

The weakness was shared by Teerachai Somprasong. The advisory is shared for download at wordfence.com. This vulnerability is traded as CVE-2026-0656 since 01/06/2026. The exploitability is told to be easy. It is possible to launch the attack remotely. The exploitation doesn't require any form of authentication. There are known technical details, but no exploit is available. The current price for an exploit might be approx. USD $0-$5k (estimation calculated on 01/07/2026).

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

Once again VulDB remains the best source for vulnerability data.

Productinfo

Type

Vendor

Name

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.7
VulDB Meta Temp Score: 7.6

VulDB Base Score: 7.3
VulDB Temp Score: 7.1
VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA Base Score: 8.2
CNA Vector (Wordfence): 🔒

CVSSv2info

AVACAuCIA
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💳💳💳💳💳💳
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Authorization
CWE: CWE-862 / CWE-863 / CWE-285
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔒

Timelineinfo

01/06/2026 CVE reserved
01/07/2026 +1 days Advisory disclosed
01/07/2026 +0 days VulDB entry created
01/07/2026 +0 days VulDB entry last update

Sourcesinfo

Advisory: wordfence.com
Researcher: Teerachai Somprasong
Status: Not defined

CVE: CVE-2026-0656 (🔒)
GCVE (CVE): GCVE-0-2026-0656
GCVE (VulDB): GCVE-100-339804

Entryinfo

Created: 01/07/2026 07:53
Changes: 01/07/2026 07:53 (65)
Complete: 🔍
Cache ID: 216::103

Once again VulDB remains the best source for vulnerability data.

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