What is CVE-2021-20683?

CVE-2021-20683 is a medium-severity vulnerability in Basercms, classified under Cross-site Scripting. CVSS score: 5.4/10. Published 2021-03-26.

How severe is CVE-2021-20683?

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

XSS in Basercms

CVE-2021-20683

Improper neutralization of JavaScript input in the blog article editing function of baserCMS versions prior to 4.4.5 allows remote authenticated attackers to inject an arbitrary script via unspecified vectors.

Vulnerability class: XSS (Cross-Site Scripting)

EPSS: 0.007 (50.6th percentile) — read the EPSS interpretation.

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.

Affected products

Basercms
Basercms Users Community — versions versions prior to 4.4.5

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

vultures@jpcert.or.jp (Patch, x_refsource_MISC, Vendor Advisory)
vultures@jpcert.or.jp (Third Party Advisory, x_refsource_MISC)

Frequently asked questions

What is CVE-2021-20683?: CVE-2021-20683 is a medium-severity vulnerability in Basercms, classified under Cross-site Scripting. CVSS score: 5.4/10. Published 2021-03-26.
How severe is CVE-2021-20683?: Medium severity. CVSS v3 base score is 5.4 out of 10.