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Vulnerability record · CVE-2021-30109 · published 5 April 2021

CVE-2021-30109: Froala editor cross-site scripting vulnerability

Froala · Froala Editor

Froala Editor 3.2.6 is affected by Cross Site Scripting (XSS). Under certain conditions, a base64 crafted string leads to persistent Cross-site scripting (XSS) vulnerability within the hyperlink creation module.

6.1 CVSS 3.1 Medium EPSS 1.2% · top 32.4% CWE-79 · Cross-site scripting
6.1CVSS 3.1 base score, v2 4.3
1.2%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
2References
9 Jul 2026Last modified by NVD

Description

Froala Editor 3.2.6 is affected by Cross Site Scripting (XSS). Under certain conditions, a base64 crafted string leads to persistent Cross-site scripting (XSS) vulnerability within the hyperlink creation module.

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

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://github.com/Hackdwerg/CVE-2021-30109/blob/main/README.md Third Party Advisory
https://github.com/Hackdwerg/CVE-2021-30109/blob/main/README.md Third Party Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

6.1CVE-2023-43263Froala editor cross-site scripting vulnerabilityA Cross-site scripting (XSS) vulnerability in Froala Editor v.4.1.1 allows attackers to execute arbitrary code via the Markdown component.EPSS 0.69%6.1CVE-2023-42426Froala editor cross-site scripting vulnerabilityCross-site scripting (XSS) vulnerability in Froala Froala Editor v.4.1.1 allows remote attackers to execute arbitrary code via the 'Insert link' para…EPSS 0.97%6.1CVE-2020-22864Froala editor cross-site scripting vulnerabilityA cross site scripting (XSS) vulnerability in the Insert Video function of Froala WYSIWYG Editor 3.1.0 allows attackers to execute arbitrary web scri…EPSS 0.87%6.1CVE-2020-26523Froala editor cross-site scripting vulnerabilityFroala Editor before 3.2.2 allows XSS via pasted content.EPSS 0.69%6.1CVE-2019-19935Froala editor cross-site scripting vulnerabilityFroala Editor before 3.2.3 allows XSS.EPSS 1.8%5.4CVE-2023-41592Froala editor cross-site scripting vulnerabilityFroala Editor v4.0.1 to v4.1.1 was discovered to contain a cross-site scripting (XSS) vulnerability.EPSS 1.0%5.4CVE-2021-28114Froala WYSIWYG Editor namespace confusion leads to XSSFroala WYSIWYG Editor 3.2.6-1 is affected by cross-site scripting caused by namespace confusion during parsing. The flaw allows script injection thro…EPSS 52%analysed6.1CVE-2026-42897Microsoft Exchange Server XSS enables spoofingMicrosoft Exchange Server and Exchange Server Subscription Edition fail to neutralize input during web page generation, a cross-site scripting flaw (…KEVEPSS 0.52%analysed

Source: NIST National Vulnerability Database (record CVE-2021-30109), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.