CVE-2023-4141Network attack vector

Authenticated PHP code execution via cus2 mapping

Published Aug 4, 2023 · Updated Apr 8, 2026

Code injection in Smackcoders WP Ultimate CSV Importer 7.9.8 and earlier allows remote authenticated users to execute PHP code. ImportHelpers.php processes an attacker-controlled ->cus2 mapping as a request to create a PHP file instead of rejecting that file type. Exploitation requires an Author-or-higher account and prior administrator enablement of importer access; successful use runs attacker-supplied PHP on the server.

CVSS severity8.0
High
EPSS probability1.55%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Code injection in Smackcoders WP Ultimate CSV Importer 7.9.8 and earlier allows remote authenticated users to execute PHP code. ImportHelpers.php processes an attacker-controlled ->cus2 mapping as a request to create a PHP file instead of rejecting that file type. Exploitation requires an Author-or-higher account and prior administrator enablement of importer access; successful use runs attacker-supplied PHP on the server.

The record

CVE
CVE-2023-4141
Published
Aug 4, 2023
Updated
Apr 8, 2026
Vendor
Smackcoders Inc.
Product
WP Ultimate CSV Importer
Classifications
CWE-94, T1190
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Aug 4, 2023CVE publishedPublication date reported by the CVE source.
  2. Apr 8, 2026Record 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 <=7.9.8

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Smackcoders Inc. · WP Ultimate CSV Importerversion=0 <=7.9.8

Published CVSS scores

8.0WordfenceCVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H
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.

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

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 exploitUnconfirmed

Weakness, pattern, technique

CWE-94Improper Control of Generation of Code ('Code Injection')
T1190Exploit Public-Facing Application

Public exploit references

No public exploit references are available in this record.

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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