Cyber Resilience

CVE-2021-4227

MediumPublic PoC

Published: 16 January 2024

Published
16 January 2024
Modified
02 June 2025
KEV Added
Patch
CVSS Score v3.1 5.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
EPSS Score 0.0022 44.9th percentile
Risk Priority 11 60% EPSS · 20% KEV · 20% CVSS

Summary

CVE-2021-4227 is a medium-severity Injection (CWE-74) vulnerability in Obg Ark Wysiwyg Comment Editor. Its CVSS base score is 5.3 (Medium).

Operationally, ranked at the 44.9th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog; a public proof-of-concept is referenced.

EU & UK References

Vulnerability details

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

CWE(s)

Related Threats

No named actor attribution yet. ATT&CK technique mapping in progress for this CVE.

Affected Assets

obg
ark wysiwyg comment editor
≤ 2.15.6

Mitigating Controls

Likely Mitigating Controls AI

Per-CVE control mapping for this CVE has not run yet; the list below is derived from the weakness types (CWEs) cited in the NVD entry.

addresses: CWE-74

Developer assessments and testing (including injection-focused techniques) identify improper neutralization of special elements, and the verifiable flaw remediation corrects them pre-deployment.

addresses: CWE-74

Identifies indicators of injection attacks (command, SQL, LDAP, etc.) via anomaly and attack monitoring.

References