CVE-2023-53930CWE-639

ProjectSend r1605 Insecure Direct Object Reference File Download Vulnerability

High · published December 17, 2025

CVSS v4.0
7.1
EPSS
0%
Percentile
31.2
In the wild
Unconfirmed
What it is

⚡ A simple tweak to the download ID is all it takes for attackers to snatch private files from ProjectSend r1605! 🚨 Think of it like a restaurant where anyone can ask for dishes by just changing the order number on their receipt — no one checks who really placed the order, and anyone can grab someone else's meal! This vulnerability could allow an attacker to access any user's private files without needing to log in, putting sensitive information at risk. Imagine the chaos if confidential documents, contracts, or personal data fall into the wrong hands — that's a major privacy breach waiting to happen!

Put simply

Think of it like a restaurant where anyone can ask for dishes by just changing the order number on their receipt — no one checks who really placed the order, and anyone can grab someone else's meal! The insecure direct object reference (IDOR) vulnerability in ProjectSend r1605 allows attackers to manipulate the 'id' parameter in the download request, enabling unauthorized access to files that should remain confidential.

What to do

This vulnerability could allow an attacker to access any user's private files without needing to log in, putting sensitive information at risk. Imagine the chaos if confidential documents, contracts, or personal data fall into the wrong hands — that's a major privacy breach waiting to happen! To safeguard your data, patch ProjectSend to version r1606 or later immediately. Additionally, review your file access controls to ensure proper authentication is enforced. Regular security audits can help identify other potential vulnerabilities. You've got this! Follow these steps and you'll be well on your way to securing those private files! 🛡️

The record
Technical detail
CVSS v4.0
7.1 · HIGH
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
EPSS
0.00383 · 31.2th percentile
Weakness
CWE-639 · Authorization Bypass Through User-Controlled Key
Published
2025-12-17T22:44Z
EPSS history
Timeline
  • 17 DEC 22:44Z
    ProjectSend r1605 Insecure Direct Object Reference File Download Vulnerability
    cvelistv5