What is CVE-2020-23373?

CVE-2020-23373 is a medium-severity vulnerability in 5none Nonecms, classified under Cross-site Scripting. CVSS score: 5.4/10. Published 2021-05-10.

How severe is CVE-2020-23373?

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

XSS in 5none Nonecms

CVE-2020-23373

Cross-site scripting (XSS) vulnerability in admin/nav/add.html in noneCMS v1.3.0 allows remote authenticated attackers to inject arbitrary web script or HTML via the name parameter.

Vulnerability class: XSS (Cross-Site Scripting)

Published 2021-05-10 · 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: 0.008 (54.6th percentile), scored 2026-09-30.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 55th percentile — 54.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.008 · newest: 0.008 · change: 0.000

Affected products

5none Nonecms — versions 1.3.0

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

github.com/nangge/noneCms/issues/33 (Exploit, Third Party Advisory)

Frequently asked questions

What is CVE-2020-23373?: CVE-2020-23373 is a medium-severity vulnerability in 5none Nonecms, classified under Cross-site Scripting. CVSS score: 5.4/10. Published 2021-05-10.
How severe is CVE-2020-23373?: Medium severity. CVSS v3 base score is 5.4 out of 10.