How severe is CVE-2021-4227?

CVE-2021-4227 has a CVSS 3.x base score of 5.3, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity low, and availability none.

Is CVE-2021-4227 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (45th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-4227?

CVE-2021-4227 affects Obg Ark Wysiwyg Comment Editor. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-4227?

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

Does CVE-2021-4227 have an EU (EUVD) identifier?

Yes. CVE-2021-4227 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2021-34085.

When was CVE-2021-4227 published?

CVE-2021-4227 was published on 2024-01-16 and last updated on 2026-06-17.

CVE-2021-4227

CVE-2021-4227 is a medium-severity vulnerability in Obg Ark Wysiwyg Comment Editor with a CVSS 3.x base score of 5.3. 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-74.

Key facts

Severity: Medium (CVSS 3.x base score 5.3)
EPSS exploit prediction: 1% (45th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2021-34085
Weakness: CWE-74
Affected product: Obg Ark Wysiwyg Comment Editor
Published: 2024-01-16
Last modified: 2026-06-17

Description

The ark-commenteditor WordPress plugin through 2.15.6 does not properly sanitise or encode the comments when in Source editor, allowing attackers to inject an iFrame in the page and thus load arbitrary content from any page to the comment section

Frequently asked questions

What is CVE-2021-4227?: The ark-commenteditor WordPress plugin through 2.15.6 does not properly sanitise or encode the comments when in Source editor, allowing attackers to inject an iFrame in the page and thus load arbitrary content from any page to the comment section
How severe is CVE-2021-4227?: CVE-2021-4227 has a CVSS 3.x base score of 5.3, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity low, and availability none.
Is CVE-2021-4227 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (45th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-4227?: CVE-2021-4227 affects Obg Ark Wysiwyg Comment Editor. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-4227?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2021-4227 have an EU (EUVD) identifier?: Yes. CVE-2021-4227 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2021-34085.
When was CVE-2021-4227 published?: CVE-2021-4227 was published on 2024-01-16 and last updated on 2026-06-17.

References

https://wpscan.com/vulnerability/8d015eba-31dc-44cb-a051-4e95df782b75/

Affected products (1)

cpe:2.3:a:obg:ark_wysiwyg_comment_editor:*:*:*:*:*:wordpress:*:*

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