What is CVE-2020-21482?

CVE-2020-21482 is a medium-severity vulnerability in Rgcms Project, classified under Cross-site Scripting. CVSS score: 5.4/10. Published 2021-09-15.

How severe is CVE-2020-21482?

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

XSS in Rgcms Project

CVE-2020-21482

A cross-site scripting (XSS) vulnerability in RGCMS v1.06 allows attackers to obtain the administrator's cookie via a crafted payload in the Name field under the Message Board module

Vulnerability class: XSS (Cross-Site Scripting)

Published 2021-09-15 · 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

Rgcms Project — versions 1.06

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

www.porlockz.com/A-xss-vulnerability-in-RGCMS-V1-06/ (Exploit, Third Party Advisory)

Frequently asked questions

What is CVE-2020-21482?: CVE-2020-21482 is a medium-severity vulnerability in Rgcms Project, classified under Cross-site Scripting. CVSS score: 5.4/10. Published 2021-09-15.
How severe is CVE-2020-21482?: Medium severity. CVSS v3 base score is 5.4 out of 10.