ProjectSend r1605 Insecure Direct Object Reference File Download Vulnerability

Advisories

severity: high
date: December 17, 2025
Affecting: projectSend r1605
CVE: CVE-2023-53930
CWE: CWE-639 Authorization Bypass Through User-Controlled Key
CVSS: 7.1
CVSS V4 Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N
References: ExploitDB-51400
Official Product Homepage
Credit: Mirabbas Ağalarov
Description: ProjectSend r1605 contains an insecure direct object reference vulnerability that allows unauthenticated attackers to download private files by manipulating the download ID parameter. Attackers can access any user's private files by changing the 'id' parameter in the download request to process.php.