What is CVE-2020-14056?

CVE-2020-14056 is a critical-severity vulnerability in Monstaftp Monsta FTP, classified under Server-Side Request Forgery (SSRF). CVSS score: 9.8/10. Published 2020-07-01.

How severe is CVE-2020-14056?

Critical severity. CVSS v3 base score is 9.8 out of 10.

SSRF in Monstaftp Monsta FTP

CVE-2020-14056

Monsta FTP 2.10.1 or below is prone to a server-side request forgery vulnerability due to insufficient restriction of the web fetch functionality. This allows attackers to read arbitrary local files and interact with arbitrary third-party services.

Vulnerability class: SSRF (Server-Side Request Forgery)

Published 2020-07-01 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.013 (70.0th percentile), scored 2026-10-01.

Low probability of exploitation in the next 30 days, but still tracked. 70th percentile — 70.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.013 · newest: 0.013 · change: 0.000

Affected products

Monstaftp Monsta FTP

Weakness classification (CWE)

CWE-918 — Server-Side Request Forgery (SSRF)

References

www.monstaftp.com/notes/ (Release Notes, Vendor Advisory)
github.com/sbaresearch/advisories/tree/public/2019/SBA-ADV-20191203-02_Monsta_F… (Third Party Advisory)

Frequently asked questions

What is CVE-2020-14056?: CVE-2020-14056 is a critical-severity vulnerability in Monstaftp Monsta FTP, classified under Server-Side Request Forgery (SSRF). CVSS score: 9.8/10. Published 2020-07-01.
How severe is CVE-2020-14056?: Critical severity. CVSS v3 base score is 9.8 out of 10.