Welcart e-Commerce Plugin up to 2.8.5 on WordPress AJAX Action file_exist deserialization

CVSS Meta Temp Score
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CTI Interest Score
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A vulnerability classified as critical has been found in Welcart e-Commerce Plugin up to 2.8.5 on WordPress (E-Commerce Management Software). This affects the function file_exist of the component AJAX Action Handler. The manipulation with an unknown input leads to a deserialization vulnerability. CWE is classifying the issue as CWE-502. The application deserializes untrusted data without sufficiently verifying that the resulting data will be valid. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

The Welcart e-Commerce WordPress plugin before 2.8.6 does not validate user input before using it in file_exist() functions via various AJAX actions available to any authenticated users, which could allow users with a role as low as subscriber to perform PHAR deserialisation when they can upload a file and a suitable gadget chain is present on the blog

The weakness was published 01/03/2023. It is possible to read the advisory at wpscan.com. This vulnerability is uniquely identified as CVE-2022-4237 since 11/30/2022. Technical details of the vulnerability are known, but there is no available exploit.

Upgrading to version 2.8.6 eliminates this vulnerability.




CPE 2.3info

CPE 2.2info


VulDB Meta Base Score: 7.5
VulDB Meta Temp Score: 7.4

VulDB Base Score: 6.3
VulDB Temp Score: 6.0
VulDB Vector: 🔒
VulDB Reliability: 🔍

NVD Base Score: 8.8
NVD Vector: 🔒



VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍


Class: Deserialization
CWE: CWE-502 / CWE-20
ATT&CK: Unknown

Local: No
Remote: Yes

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒


Threat Intelligenceinfo

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


Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: Welcart e-Commerce Plugin 2.8.6


11/30/2022 CVE reserved
01/03/2023 +34 days Advisory disclosed
01/03/2023 +0 days VulDB entry created
01/27/2023 +24 days VulDB last update


Advisory: wpscan.com
Status: Confirmed

CVE: CVE-2022-4237 (🔒)


Created: 01/03/2023 08:08 AM
Updated: 01/27/2023 08:02 AM
Changes: 01/03/2023 08:08 AM (41), 01/27/2023 08:02 AM (11)
Complete: 🔍


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