CVE-2023-53980

CRITICAL 9.8

ProjectSend r1605 Remote Code Execution via File Extension Manipulation

CVSS Score

9.8

EPSS Score

0.0%

EPSS Percentile

0th

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.

CWE	CWE-434
Vendor	projectsend
Product	projectsend
Published	Dec 22, 2025
Last Updated	Mar 5, 2026

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CVSS v3 Breakdown

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Affected Versions

ProjectSend / projectSend

r1605

References

NVD ↗ CVE.org ↗ EPSS Data ↗

exploit-db.com: https://www.exploit-db.com/exploits/51238 projectsend.org: https://www.projectsend.org/ vulncheck.com: https://www.vulncheck.com/advisories/projectsend-remote-code-execution-via-file-extension-manipulation

Credits

Mirabbas Ağalarov