What is CVE-2023-53980?

CVE-2023-53980 is a critical-severity vulnerability in Projectsend, classified under Unrestricted Upload of File with Dangerous Type. CVSS score: 9.8/10. Published 2025-12-22.

How severe is CVE-2023-53980?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Arbitrary file upload in Projectsend

CVE-2023-53980

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 e…

Vulnerability class: Unrestricted File Upload

EPSS: 0.004 (61.8th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

Affected products

Projectsend — versions r1605

Weakness classification (CWE)

CWE-434 — Unrestricted Upload of File with Dangerous Type

References

ExploitDB-51238 (exploit)
Official Product Homepage (product)
VulnCheck Advisory: ProjectSend r1605 Remote Code Execution via File Extension Manipulation (third-party-advisory)

Frequently asked questions

What is CVE-2023-53980?: CVE-2023-53980 is a critical-severity vulnerability in Projectsend, classified under Unrestricted Upload of File with Dangerous Type. CVSS score: 9.8/10. Published 2025-12-22.
How severe is CVE-2023-53980?: Critical severity. CVSS v3 base score is 9.8 out of 10.