CVE-2023-53980

CRITICAL
Published Dec 22, 2025 Modified Dec 26, 2025 CWE-434

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 v3.1 Score

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

Weakness Type (CWE)

CWE-434 Unrestricted Upload

Affected Products

Vendor Product
projectsend projectsend

References

Frequently Asked Questions

What is 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 endpoint to execute arbitrary commands on the server. It has a CVSS v3.1 base score of 9.8 (CRITICAL).
How severe is CVE-2023-53980? +
CVE-2023-53980 has a CVSS v3.1 score of 9.8 out of 10, rated CRITICAL. This is a critical vulnerability that should be patched immediately.
What products are affected by CVE-2023-53980? +
CVE-2023-53980 affects products from projectsend, specifically: projectsend. Check the affected products table above for specific version ranges.
How do I check if I'm vulnerable to CVE-2023-53980? +
You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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