CVE-2023-53942Public exploitNetwork attack vector

Authenticated code execution via unchecked ZIP extraction

Published Dec 18, 2025 · Updated Dec 18, 2025

Unrestricted file upload in File Thingie 2.5.7 allows remote authenticated users to execute arbitrary system commands via a PHP ZIP archive. The ft2.php unzip action validates only the outer .zip name, then invokes the system unzip utility without checking extracted entries, allowing a PHP script to be written beneath the served file directory. A valid File Thingie account with upload and file-action permissions is required; requesting the extracted script executes commands with the web server process privileges.

CVSS severity9.4
Critical
EPSS probability0.58%
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 File Thingie 2.5.7 allows remote authenticated users to execute arbitrary system commands via a PHP ZIP archive. The ft2.php unzip action validates only the outer .zip name, then invokes the system unzip utility without checking extracted entries, allowing a PHP script to be written beneath the served file directory. A valid File Thingie account with upload and file-action permissions is required; requesting the extracted script executes commands with the web server process privileges.

The record

CVE
CVE-2023-53942
Published
Dec 18, 2025
Updated
Dec 18, 2025
Vendor
Andreas Haugstrup Pedersen
Product
File Thingie
Classifications
CWE-434, T1190, T1505.003
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Dec 18, 2025CVE publishedPublication date reported by the CVE source.
  2. Dec 18, 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=2.5.7

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Andreas Haugstrup Pedersen · File Thingieversion=2.5.7

Published CVSS scores

8.8VulnCheckCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
9.4VulnCheckCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA: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
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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