CVE-2022-4237Public exploitNetwork attack vector

Authenticated PHP object injection via unchecked file paths

Published Jan 2, 2023 · Updated Apr 10, 2025

PHP object injection in Welcart e-Commerce before 2.8.6 allows remote authenticated users to trigger PHAR deserialization via AJAX. Multiple AJAX actions pass unvalidated user-controlled paths to file_exists(), causing PHP to deserialize PHAR metadata for phar:// paths. Subscriber access is sufficient, but exploitation also requires file-upload ability and a suitable gadget chain; resulting actions depend on that chain.

CVSS severity8.8
High
EPSS probability1.07%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

PHP object injection in Welcart e-Commerce before 2.8.6 allows remote authenticated users to trigger PHAR deserialization via AJAX. Multiple AJAX actions pass unvalidated user-controlled paths to file_exists(), causing PHP to deserialize PHAR metadata for phar:// paths. Subscriber access is sufficient, but exploitation also requires file-upload ability and a suitable gadget chain; resulting actions depend on that chain.

The record

CVE
CVE-2022-4237
Published
Jan 2, 2023
Updated
Apr 10, 2025
Vendor
Welcart Inc.
Product
Welcart e-Commerce
Classifications
T1190
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Jan 2, 2023CVE publishedPublication date reported by the CVE source.
  2. Apr 10, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <2.8.6

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Welcart Inc. · Welcart e-Commerceversion=0 <2.8.6

Published CVSS scores

8.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

T1190Exploit Public-Facing Application

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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