What is CVE-2021-41663?

CVE-2021-41663 is a medium-severity vulnerability in 1234n Minicms, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2022-06-13.

How severe is CVE-2021-41663?

Medium severity. CVSS v3 base score is 6.1 out of 10.

XSS in 1234n Minicms

CVE-2021-41663

A cross-site scripting (XSS) vulnerability exists in Mini CMS V1.11. The vulnerability exists in the article upload: post-edit.php page.

Vulnerability class: XSS (Cross-Site Scripting)

Published 2022-06-13 · last modified 2026-07-09.

CVSS v3 metric

CVSS v3 base score 6.1 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N.

EPSS exploit prediction

EPSS: 0.008 (53.9th percentile), scored 2026-09-30.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 54th percentile — 53.9% 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

1234n Minicms — versions 1.11

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

github.com/bg5sbk/MiniCMS (Product, Third Party Advisory)
af854a3a-2127-422b-91ae-364da2661108 (Broken Link, Not Applicable)
github.com/bg5sbk/MiniCMS/issues/41 (Exploit, Third Party Advisory)

Frequently asked questions

What is CVE-2021-41663?: CVE-2021-41663 is a medium-severity vulnerability in 1234n Minicms, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2022-06-13.
How severe is CVE-2021-41663?: Medium severity. CVSS v3 base score is 6.1 out of 10.