CVE-2022-4328Public exploitNetwork attack vector

Unauthenticated code execution via mixed-case PHP upload

Published Mar 6, 2023 · Updated Mar 4, 2025

Unrestricted file upload in N-Media WooCommerce Checkout Field Manager before 18.0 allows remote attackers to execute server-side PHP. The unauthenticated cfom_upload_file AJAX action accepts a multipart file and mixed-case .pHp name without rejecting the dangerous extension, then stores it under wp-content/uploads/cfom_files. A network-reachable WordPress site with the plugin active is sufficient; requesting the stored PHP file executes attacker-supplied code in the web server context.

CVSS severity9.8
Critical
EPSS probability4.43%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Unrestricted file upload in N-Media WooCommerce Checkout Field Manager before 18.0 allows remote attackers to execute server-side PHP. The unauthenticated cfom_upload_file AJAX action accepts a multipart file and mixed-case .pHp name without rejecting the dangerous extension, then stores it under wp-content/uploads/cfom_files. A network-reachable WordPress site with the plugin active is sufficient; requesting the stored PHP file executes attacker-supplied code in the web server context.

The record

CVE
CVE-2022-4328
Published
Mar 6, 2023
Updated
Mar 4, 2025
Vendor
N-Media
Product
WooCommerce Checkout Field Manager
Classifications
CWE-434, T1190, T1505.003
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Mar 6, 2023CVE publishedPublication date reported by the CVE source.
  2. Mar 4, 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 <18.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

N-Media · WooCommerce Checkout Field Managerversion=0 <18.0

Published CVSS scores

9.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
9.8CISA-ADPCVSS:3.1/AV:N/AC:L/PR:N/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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-434Unrestricted Upload of File with Dangerous Type
T1190Exploit Public-Facing Application
T1505.003Web Shell

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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