CVE-2023-5953Public exploitNetwork attack vector

Authenticated PHP upload via unprotected certificate handler

Published Dec 4, 2023 · Updated May 29, 2025

Arbitrary file upload in Welcart e-Commerce before 2.9.5 allows remote authenticated users to place PHP files on the server. The upload_certificate_file AJAX action accepts the upfile form part without authorization, CSRF protection, or file-type validation. Subscriber access is sufficient, but the Paygent payment module must be enabled and configured before its certificate-upload path is exposed.

CVSS severity8.8
High
EPSS probability0.48%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Arbitrary file upload in Welcart e-Commerce before 2.9.5 allows remote authenticated users to place PHP files on the server. The upload_certificate_file AJAX action accepts the upfile form part without authorization, CSRF protection, or file-type validation. Subscriber access is sufficient, but the Paygent payment module must be enabled and configured before its certificate-upload path is exposed.

The record

CVE
CVE-2023-5953
Published
Dec 4, 2023
Updated
May 29, 2025
Vendor
Welcart Inc.
Product
Welcart e-Commerce
Classifications
CWE-434, T1105
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Dec 4, 2023CVE publishedPublication date reported by the CVE source.
  2. May 29, 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 <2.9.5

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Welcart Inc. · Welcart e-Commerceversion=0 <2.9.5

Published CVSS scores

8.8CISA-ADPCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/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 exploitPublished

Weakness, pattern, technique

CWE-434Unrestricted Upload of File with Dangerous Type
T1105Ingress Tool Transfer

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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