CVE-2023-53930
Unknown Unknown - Not Provided
BaseFortify

Publication date: 2025-12-17

Last updated on: 2025-12-27

Assigner: VulnCheck

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.
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Meta Information
Published
2025-12-17
Last Modified
2025-12-27
Generated
2026-06-16
AI Q&A
2025-12-18
EPSS Evaluated
2026-06-15
NVD
CVE-2023-53930
Affected Vendors & Products
Showing 1 associated CPE
Vendor Product Version / Range
projectsend projectsend r1605
Helpful Resources
Exploitability
CWE
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KEV
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CWE ID Description
CWE-639 The system's authorization functionality does not prevent one user from gaining access to another user's data or record by modifying the key value identifying the data.
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Executive Summary

This vulnerability is an insecure direct object reference in ProjectSend r1605 that allows unauthenticated attackers to download private files by manipulating the 'id' parameter in the download request to process.php. By changing this parameter, attackers can access any user's private files without authorization.

Impact Analysis

The vulnerability can lead to unauthorized access and disclosure of private files, compromising confidentiality and potentially exposing sensitive information to attackers without authentication.

Detection Guidance

This vulnerability can be detected by attempting to access private files through manipulation of the 'id' parameter in the download request to process.php. A simple test command would be to send a GET request to the endpoint `/process.php?do=download&id=[file_id]` with different file IDs to check if unauthorized files can be downloaded. For example, using curl: `curl -v "http://targetsite/process.php?do=download&id=1"` and changing the id value to see if files belonging to other users are accessible without authentication. [1, 2]

Mitigation Strategies

Immediate mitigation steps include restricting access to the download functionality by implementing proper authorization checks on the 'id' parameter to ensure users can only download their own files. Until a patch is applied, consider disabling the download feature or restricting access to authenticated and authorized users only. Monitoring and logging download requests for suspicious activity is also recommended. [2]

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