File Thingie 2.5.7 Authenticated Arbitrary File Upload Remote Code Execution

Advisories

severity: critical
date: December 18, 2025
Affecting: File Thingie 2.5.7
CVE: CVE-2023-53942
CWE: CWE-434 Unrestricted Upload of File with Dangerous Type
CVSS: 9.4
CVSS V4 Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H
References: ExploitDB-51436
Product GitHub Repository
Credit: Maurice Fielenbach (grimlockx) - Hexastrike Cybersecurity UG (haftungsbeschränkt)
Description: File Thingie 2.5.7 contains an authenticated file upload vulnerability that allows remote attackers to upload malicious PHP zip archives to the web server. Attackers can create a custom PHP payload, upload and unzip it, and then execute arbitrary system commands through a crafted PHP script with a command parameter.