What is CVE-2020-36493?

CVE-2020-36493 is a medium-severity vulnerability in Dedecms, classified under Cross-site Scripting. CVSS score: 5.4/10. Published 2021-10-22.

How severe is CVE-2020-36493?

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

XSS in Dedecms

CVE-2020-36493

DedeCMS v7.5 SP2 was discovered to contain multiple cross-site scripting (XSS) vulnerabilities in the component media_main.php via the `activepath`, `keyword`, `tag`, `fmdo=x&filename`, `CKEditor` and `CKEditorFuncNum` parameters.

Vulnerability class: XSS (Cross-Site Scripting)

Published 2021-10-22 · 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: 0.006 (45.7th percentile), scored 2026-10-02.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 46th percentile — 45.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.006 · newest: 0.006 · change: 0.000

Affected products

Dedecms — versions 7.5

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

www.vulnerability-lab.com/get_content.php (Exploit, Third Party Advisory)

Frequently asked questions

What is CVE-2020-36493?: CVE-2020-36493 is a medium-severity vulnerability in Dedecms, classified under Cross-site Scripting. CVSS score: 5.4/10. Published 2021-10-22.
How severe is CVE-2020-36493?: Medium severity. CVSS v3 base score is 5.4 out of 10.