What is CVE-2021-33213?

CVE-2021-33213 is a medium-severity vulnerability in Element-It HTTP Commander, classified under Server-Side Request Forgery (SSRF). CVSS score: 6.5/10. Published 2021-07-14.

How severe is CVE-2021-33213?

Medium severity. CVSS v3 base score is 6.5 out of 10.

SSRF in Element-It HTTP Commander

CVE-2021-33213

An SSRF vulnerability in the "Upload from URL" feature in Elements-IT HTTP Commander 5.3.3 allows remote authenticated users to retrieve HTTP and FTP files from the internal server network by inserting an internal address.

Vulnerability class: SSRF (Server-Side Request Forgery)

Published 2021-07-14 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N.

EPSS exploit prediction

EPSS: 0.013 (69.5th percentile), scored 2026-10-02.

Low probability of exploitation in the next 30 days, but still tracked. 69th percentile — 69.5% 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

Element-It HTTP Commander — versions 5.3.3

Weakness classification (CWE)

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

References

www.syss.de/pentest-blog/ (Third Party Advisory)
www.syss.de/fileadmin/dokumente/Publikationen/Advisories/SYSS-2021-027.txt (Exploit, Third Party Advisory)

Frequently asked questions

What is CVE-2021-33213?: CVE-2021-33213 is a medium-severity vulnerability in Element-It HTTP Commander, classified under Server-Side Request Forgery (SSRF). CVSS score: 6.5/10. Published 2021-07-14.
How severe is CVE-2021-33213?: Medium severity. CVSS v3 base score is 6.5 out of 10.