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CVE-2023-53980

ProjectSend r1605 Remote Code Execution via File Extension Manipulation

Published: Dec 22, 2025Updated: Dec 26, 2025 Sources: CVE List NVDCWE-434
NVD MITRE
9.8CVSSCRITICAL
EPSS Score
0.8%
Top 47.8%
CISA KEV
Not in KEV
Exploits
1 Known
Remediation
No Fix Available

Description

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.

CVSS Vector Breakdown

AV:NAC:LPR:NUI:NS:UC:HI:HA:H
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:NPrivileges Required
None
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:HConfidentiality
High
I:HIntegrity
High
A:HAvailability
High
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Weaknesses

CWE-434

Affected Products

projectSendProjectSend
On-prem
Enterprise Software / collaboration-groupware
projectsendprojectsend
On-prem
Enterprise Software / collaboration-groupware
projectsendoss-projectEnterprise Softwareaka projects end, projectsend/projectsend

Attack Graph

Products CVE Techniques Tactics

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Exploitability

1 exploit source identified

Exploit details including PoC links, Metasploit modules, and scanner templates are available after registration.

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MITRE ATT&CK

3 techniques
Command and Control
Initial Access
Persistence
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References

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

Timeline

Published
Dec 22, 2025
Last Updated
Dec 26, 2025

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