What is CVE-2021-28114?

CVE-2021-28114 is a medium-severity vulnerability in Froala Editor, classified under Cross-site Scripting. CVSS score: 5.4/10. Published 2021-07-16.

How severe is CVE-2021-28114?

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

XSS in Froala Editor

CVE-2021-28114

Froala WYSIWYG Editor 3.2.6-1 is affected by XSS due to a namespace confusion during parsing.

Vulnerability class: XSS (Cross-Site Scripting)

Published 2021-07-16 · 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: 0.520 (99.0th percentile), scored 2026-10-29.

High probability of exploitation in the next 30 days — patch promptly. 99th percentile — 99.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.520 · newest: 0.520 · change: 0.000

Affected products

Froala Editor

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

labs.bishopfox.com/advisories (Third Party Advisory)
froala.com/wysiwyg-editor/ (Vendor Advisory)
labs.bishopfox.com/advisories/froala-editor-v3.2.6 (Third Party Advisory, Release Notes)

Frequently asked questions

What is CVE-2021-28114?: CVE-2021-28114 is a medium-severity vulnerability in Froala Editor, classified under Cross-site Scripting. CVSS score: 5.4/10. Published 2021-07-16.
How severe is CVE-2021-28114?: Medium severity. CVSS v3 base score is 5.4 out of 10.