CVE-2023-53980

ProjectSend r1605 Remote Code Execution via File Extension Manipulation

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.

Affected

ProjectSend · projectSend

CVSS v4.0 VULNCHECK

8.7 HIGHCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

CVSS v3.1 VULNCHECK

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

EPSS

0.95% chance of exploitation in the next 30 days, 60th percentile

Published

2025-12-22

Updated

2026-03-05

Proof-of-concept exploits (1)

• https://www.exploit-db.com/exploits/51238

Security advisories

• https://www.vulncheck.com/advisories/projectsend-remote-code-execution-via-file-extension…
• https://www.projectsend.org

References

• CVE Record
• NVD entry