CVE-2023-53930 HIGH

CVE-2023-53930: ProjectSend r1605 Insecure Direct Object Reference File Download Vulnerability

Vendor Projectsend
Product projectSend
Weakness CWE-639 · IDOR
Published December 17, 2025
Last update April 7, 2026

CVSS base score

7.1/10
Attack vector Network
Attack complexity Low
Privileges required Low
User interaction None
Confidentiality
Integrity

CVSS 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

What the vulnerability does

01Description

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.

Key dates

02Disclosure timeline

December 17, 2025 CVE published
April 7, 2026 Record updated