Arbitrary file upload in Grabaperch Perch
CVE-2023-53889
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.
Vulnerability class: Unrestricted File Upload
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.2 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.009 (59.3th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 59th percentile — 59.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.009 · newest: 0.009 · change: +0.000
Affected products
- Grabaperch Perch — versions 3.2
- Perch — versions 3.2
Weakness classification (CWE)
References
- www.exploit-db.com/exploits/51620 (Exploit, exploit)
- grabaperch.com/ (Product, product)
- www.vulncheck.com/advisories/perch-cms-remote-code-execution-via-unrestricted-f… (Third Party Advisory, third-party-advisory)
Frequently asked questions
- What is CVE-2023-53889?
- CVE-2023-53889 is a high-severity vulnerability in Grabaperch Perch, classified under Unrestricted Upload of File with Dangerous Type. CVSS score: 7.2/10. Published 2025-12-15.
- How severe is CVE-2023-53889?
- High severity. CVSS v3 base score is 7.2 out of 10.