What is CVE-2021-33212?

CVE-2021-33212 is a medium-severity vulnerability in Element-It HTTP Commander, classified under Cross-site Scripting. CVSS score: 5.4/10. Published 2021-07-14.

How severe is CVE-2021-33212?

Medium severity. CVSS v3 base score is 5.4 out of 10.

XSS in Element-It HTTP Commander

CVE-2021-33212

A Cross-site scripting (XSS) vulnerability in the "View in Browser" feature in Elements-IT HTTP Commander 5.3.3 allows remote authenticated users to inject arbitrary web script or HTML via a crafted SVG image.

Vulnerability class: XSS (Cross-Site Scripting)

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

CVSS v3 metric

CVSS v3 base score 5.4 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N.

EPSS exploit prediction

EPSS: 0.007 (53.1th percentile), scored 2026-10-02.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 53rd percentile — 53.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.007 · newest: 0.007 · change: 0.000

Affected products

Element-It HTTP Commander — versions 5.3.3

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

www.syss.de/pentest-blog/ (Third Party Advisory)
www.syss.de/fileadmin/dokumente/Publikationen/Advisories/SYSS-2021-020.txt (Exploit, Third Party Advisory)

Frequently asked questions

What is CVE-2021-33212?: CVE-2021-33212 is a medium-severity vulnerability in Element-It HTTP Commander, classified under Cross-site Scripting. CVSS score: 5.4/10. Published 2021-07-14.
How severe is CVE-2021-33212?: Medium severity. CVSS v3 base score is 5.4 out of 10.