What is CVE-2018-9037?

CVE-2018-9037 is a high-severity vulnerability in Monstra, classified under Unrestricted Upload of File with Dangerous Type. CVSS score: 8.8/10. Published 2018-04-10.

How severe is CVE-2018-9037?

High severity. CVSS v3 base score is 8.8 out of 10.

Arbitrary file upload in Monstra

CVE-2018-9037

Monstra CMS 3.0.4 allows remote code execution via an upload_file request for a .zip file, which is automatically extracted and may contain .php files.

Vulnerability class: Unrestricted File Upload

Published 2018-04-10 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 8.8 (High). Vector: CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.028 (86.1th percentile), scored 2026-10-02.

Low probability of exploitation in the next 30 days, but still tracked. 86th percentile — 86.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.029 · newest: 0.028 · change: -0.001

Affected products

Monstra — versions 3.0.4

Weakness classification (CWE)

CWE-434 — Unrestricted Upload of File with Dangerous Type

References

www.exploit-db.com/exploits/44621/ (Third Party Advisory, exploit)
github.com/monstra-cms/monstra/issues/433 (Exploit, Third Party Advisory, Issue Tracking)

Frequently asked questions

What is CVE-2018-9037?: CVE-2018-9037 is a high-severity vulnerability in Monstra, classified under Unrestricted Upload of File with Dangerous Type. CVSS score: 8.8/10. Published 2018-04-10.
How severe is CVE-2018-9037?: High severity. CVSS v3 base score is 8.8 out of 10.