CVE-2021-24493Public exploitNetwork attack vector

Unauthenticated code execution via unrestricted file upload

Published Sep 13, 2021 · Updated Aug 3, 2024

Unrestricted file upload in Ingenesis Limited Shopp 1.4 and earlier allows remote attackers to execute PHP through an AJAX request. The unauthenticated shopp_upload_file action accepts multipart file data without authorization or dangerous-file-type validation and writes it under the site's uploads path. No account or user interaction is required; an uploaded PHP payload executes with the privileges of the WordPress web process.

CVSS severity9.8
Critical
EPSS probability1.98%
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 Ingenesis Limited Shopp 1.4 and earlier allows remote attackers to execute PHP through an AJAX request. The unauthenticated shopp_upload_file action accepts multipart file data without authorization or dangerous-file-type validation and writes it under the site's uploads path. No account or user interaction is required; an uploaded PHP payload executes with the privileges of the WordPress web process.

The record

CVE
CVE-2021-24493
Published
Sep 13, 2021
Updated
Aug 3, 2024
Vendor
Ingenesis Limited
Product
Shopp
Classifications
CWE-434, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Sep 13, 2021CVE publishedPublication date reported by the CVE source.
  2. Aug 3, 2024Record 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=1.4 <=1.4

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Ingenesis Limited · Shoppversion=1.4 <=1.4

Published CVSS scores

9.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
7.5NIST NVDAV:N/AC:L/Au:N/C:P/I:P/A:P

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
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-434Unrestricted Upload of File with Dangerous Type
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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