How severe is CVE-2021-28114?

CVE-2021-28114 has a CVSS score of 5.4/10, rated MEDIUM. Review your exposure and patch according to your risk tolerance.

Which packages are affected by CVE-2021-28114?

CVE-2021-28114 affects the following packages: froala/wysiwyg-editor (Packagist). Ecosystems affected: Packagist.

How do I fix CVE-2021-28114?

Update froala/wysiwyg-editor to 3.2.7 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms CVE-2021-28114 is resolved across your whole dependency graph.

How do I detect CVE-2021-28114 in my Packagist dependencies?

Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for froala/wysiwyg-editor, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.

How do I mitigate CVE-2021-28114 if there is no patch (or I can't update yet)?

Escape or sanitise the affected output on the server side rather than relying on client-side filtering, and add a Content-Security-Policy that blocks inline script execution so injected markup cannot run even if it reaches the page.

Is CVE-2021-28114 actively exploited in the wild?

No public exploit code has been indexed for CVE-2021-28114 yet. This does not mean the vulnerability cannot be exploited — absence of public exploits does not imply safety. Apply the recommended fix and use O3 Security to monitor your exposure.

What is the EPSS score for CVE-2021-28114?

CVE-2021-28114 has an EPSS (Exploit Prediction Scoring System) score of 52.0%, placing it in the 99th percentile of all CVEs. EPSS is maintained by FIRST.org and estimates the probability that a vulnerability will be exploited in the wild within the next 30 days. A score above 50% indicates significantly elevated exploitation risk — immediate patching is strongly recommended.

What type of vulnerability is CVE-2021-28114?

CVE-2021-28114 is classified as Cross-site Scripting (XSS) (CWE-79). This weakness type describe the underlying flaw category, which helps determine the potential impact and the right class of mitigation. This is a high-impact weakness class that often enables remote code execution or data exposure.

When was CVE-2021-28114 published, and has it been updated?

CVE-2021-28114 was published on July 16, 2021 and was last updated on October 24, 2026. Advisory data evolves as severity scores, affected ranges, and exploit intelligence are revised — always check the latest version of the advisory before acting.

🐘

🐘 Packagist

Not in CISA KEV

MEDIUM severity

CVE-2021-28114 — wysiwyg-editor

MEDIUM

CVE-2021-28114 is a medium-severity (CVSS 5.4) Cross-site Scripting (XSS) vulnerability in froala/wysiwyg-editor. EPSS puts its 30-day exploitation probability at 52.0% (99th percentile). A fix is available for froala/wysiwyg-editor — see the affected versions and patch details below.

Cross-site Scripting in Froala WYSIWYG Editor

Also known asGHSA-rr6v-h7m8-wc9f

Published

Jul 16, 2021

Updated

Oct 24, 2026

Affected

1 pkg

Patched

1 / 1

Exploits

None indexed

Exploitation data as of Nov 4, 2026 · OSV.dev, NVD, FIRST.org (EPSS)

EPSS Exploitation Probability

via FIRST.org ↗

52.0%probability of exploitation in next 30 days

High Risk0.00%

Lower risk than most CVEs99th percentile — riskier than 99% of all scored CVEsHighest risk

Probability of exploitation in the next 30 days, from FIRST.org EPSS.

How urgent is this, really

Where this sits among everything scored

Real-World Exposure

1 pkg affected

🐘froala/wysiwyg-editor

Real-time download stats are indexed for npm and PyPI packages. This vulnerability affects Packagist packages — download data is not available via public APIs for these ecosystems.

Description

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

Affected Packages

1 total 1 fixed

Ecosystem	Package	Vulnerable range	Fix
🐘Packagist	`froala/wysiwyg-editor`	all versions	3.2.7`composer require froala/wysiwyg-editor:^3.2.7`

Affected Products

1 product · 1 configurations

Application

froala editorfroala

< 3.2.7

range

Detection & mitigation playbook

Open-source dependency

Detect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for froala/wysiwyg-editor, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.
Fix
Update froala/wysiwyg-editor to 3.2.7 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms CVE-2021-28114 is resolved across your whole dependency graph.
Workarounds
Escape or sanitise the affected output on the server side rather than relying on client-side filtering, and add a Content-Security-Policy that blocks inline script execution so injected markup cannot run even if it reaches the page.

Frequently Asked Questions

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

O3 Security · Impact-Aware SCA

Is CVE-2021-28114 in your dependencies?

Find it across Packagist, including transitive dependencies.

Scan my dependencies How O3 SCA works

CVSS Score

5.4/10CVSS v3 base

Vector breakdown

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

Required

Scope

Changed

Confidentiality

Low

Integrity

Low

Availability

None

Raw vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

CWE Classification

CWE-79Cross-site Scripting (XSS)

Weaponization

No Nuclei template, Metasploit module or public proof-of-concept found.

Timeline

Disclosed

Jul 16, 2021

Last updated

Oct 24, 2026

Identifiers

CVE-2021-28114

GHSA-rr6v-h7m8-wc9f

References

Advisoryfroala.com · wysiwyg editor Advisorylabs.bishopfox.com · advisories Advisorylabs.bishopfox.com · froala editor v3.2.6 Advisorynvd.nist.gov · CVE 2021 28114 Webfroala.com · wysiwyg editor

Related vulnerabilities

Also affects froala/wysiwyg-editor

This CVE is medium severity, in line with the other 3 CVEs affecting froala/wysiwyg-editor.

CVE-2024-51434CVE-2023-41592CVE-2020-26523

Same weakness: CWE-79

This CVE is medium severity; 5 of 5 other CVEs with CWE-79 are rated as high or higher (top: critical).

CVE-2026-55649CVE-2026-113787CVE-2026-44267CVE-2026-96632CVE-2026-9086Browse all CWE-79

Provenance

Sources

OSV.devNVDFIRST.org (EPSS)

Last verifiedOct 24, 2026