What is CVE-2020-36408?

CVE-2020-36408 is a medium-severity vulnerability in Cmsmadesimple Cms Made Simple, classified under Cross-site Scripting. CVSS score: 5.4/10. Published 2021-07-02.

How severe is CVE-2020-36408?

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

XSS in Cmsmadesimple Cms Made Simple

CVE-2020-36408

A stored cross scripting (XSS) vulnerability in CMS Made Simple 2.2.14 allows authenticated attackers to execute arbitrary web scripts or HTML via a crafted payload entered into the "Add Shortcut" parameter under the "Manage Shortcuts" module.

Vulnerability class: XSS (Cross-Site Scripting)

Published 2021-07-02 · 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: 0.005 (38.5th percentile), scored 2026-09-30.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 39th percentile — 38.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.005 · newest: 0.005 · change: 0.000

Affected products

Cmsmadesimple Cms Made Simple — versions 2.2.14

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

dev.cmsmadesimple.org/bug/view/12325 (Exploit, Issue Tracking, Vendor Advisory)

Frequently asked questions

What is CVE-2020-36408?: CVE-2020-36408 is a medium-severity vulnerability in Cmsmadesimple Cms Made Simple, classified under Cross-site Scripting. CVSS score: 5.4/10. Published 2021-07-02.
How severe is CVE-2020-36408?: Medium severity. CVSS v3 base score is 5.4 out of 10.