ProjectSend r1605 Remote Code Execution via File Extension Manipulation

Advisories

severity: high
date: December 22, 2025
Affecting: projectSend r1605
CVE: CVE-2023-53980
CWE: CWE-434 Unrestricted Upload of File with Dangerous Type
CVSS: 8.7
CVSS V4 Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
References: ExploitDB-51238
Official Product Homepage
Credit: Mirabbas Ağalarov
Description: ProjectSend r1605 contains a remote code execution vulnerability that allows attackers to upload malicious files by manipulating file extensions. Attackers can upload shell scripts with disguised extensions through the upload.process.php endpoint to execute arbitrary commands on the server.