CVE-2023-53889

Perch CMS 3.2 Remote Code Execution via Unrestricted File Upload

Perch CMS 3.2 contains a remote code execution vulnerability that allows authenticated administrators to upload arbitrary PHP files through the assets management interface. Attackers can upload a malicious .phar file with embedded system command execution capabilities to execute arbitrary commands on the server.

Affected

Perch

CVSS v4.0 VULNCHECK

8.6 HIGHCVSS:4.0/AV:N/AC:L/AT:N/PR:H/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 NVD

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

EPSS

0.92% chance of exploitation in the next 30 days, 60th percentile

Published

2025-12-15

Updated

2026-05-12

Proof-of-concept exploits (1)

• https://www.exploit-db.com/exploits/51620

Security advisories

• https://www.vulncheck.com/advisories/perch-cms-remote-code-execution-via-unrestricted-fil…
• https://grabaperch.com

References

• CVE Record
• NVD entry