What is CVE-2022-43118?

CVE-2022-43118 is a medium-severity vulnerability in Flatcore Flatcore-Cms, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2022-11-09.

How severe is CVE-2022-43118?

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

XSS in Flatcore Flatcore-Cms

CVE-2022-43118

A cross-site scripting (XSS) vulnerability in flatCore-CMS v2.1.0 allows attackers to execute arbitrary web scripts or HTML via a crafted payload injected into the Username text field.

Vulnerability class: XSS (Cross-Site Scripting)

Published 2022-11-09 · last modified 2026-06-17.

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: 0.004 (34.4th percentile), scored 2026-09-29.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 34th percentile — 34.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.004 · newest: 0.004 · change: +0.000

Affected products

Flatcore Flatcore-Cms — versions 2.1.0

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

github.com/flatCore/flatCore-CMS/issues/86 (Exploit, Third Party Advisory, Issue Tracking)

Frequently asked questions

What is CVE-2022-43118?: CVE-2022-43118 is a medium-severity vulnerability in Flatcore Flatcore-Cms, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2022-11-09.
How severe is CVE-2022-43118?: Medium severity. CVSS v3 base score is 6.1 out of 10.