How severe is CVE-2021-30109?

CVE-2021-30109 has a CVSS 3.x base score of 6.1, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.

Is CVE-2021-30109 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (60th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-30109?

CVE-2021-30109 affects Froala Froala Editor. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-30109?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2021-30109 published?

CVE-2021-30109 was published on 2021-04-05 and last updated on 2026-07-09.

CVE-2021-30109

CVE-2021-30109 is a medium-severity vulnerability in Froala Froala Editor with a CVSS 3.x base score of 6.1. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-79.

Key facts

Severity: Medium (CVSS 3.x base score 6.1)
CVSS v2: 4.3
EPSS exploit prediction: 1% (60th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-79
Affected product: Froala Froala Editor
Published: 2021-04-05
Last modified: 2026-07-09

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.

Frequently asked questions

What is CVE-2021-30109?: 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.
How severe is CVE-2021-30109?: CVE-2021-30109 has a CVSS 3.x base score of 6.1, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.
Is CVE-2021-30109 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (60th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-30109?: CVE-2021-30109 affects Froala Froala Editor. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-30109?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2021-30109 published?: CVE-2021-30109 was published on 2021-04-05 and last updated on 2026-07-09.

References

https://github.com/Hackdwerg/CVE-2021-30109/blob/main/README.md

Affected products (1)

cpe:2.3:a:froala:froala_editor:3.2.6:*:*:*:*:*:*:*

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