Is CVE-2021-4281 actively exploited?

No active exploitation of CVE-2021-4281 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2021-4281 be exploited remotely?

Yes. CVE-2021-4281 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2021-4281?

CVE-2021-4281 has a CVSS score of 9.8 (CRITICAL).

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CRITICAL

CVE-2021-4281

CWE-78Published: December 26, 2022· Updated: Jun 17, 2026

9.8

CVSS v3.1

Official Description

A vulnerability was found in Brave UX for-the-badge and classified as critical. Affected by this issue is some unknown functionality of the file .github/workflows/combine-prs.yml. The manipulation leads to os command injection. The name of the patch is 55b5a234c0fab935df5fb08365bc8fe9c37cf46b. It is recommended to apply a patch to fix this issue. VDB-216842 is the identifier assigned to this vulnerability.

NVD Source

Risk Analysis

Brave UX for-the-badge contains an OS command injection vulnerability within its workflow configuration. This critical flaw allows remote attackers to execute arbitrary commands on the underlying system.

No public exploit is known, and it is not in the KEV catalog. The vulnerability is remotely exploitable with low complexity.

Recommended Action

Apply the patch (55b5a234c0fab935df5fb08365bc8fe9c37cf46b) provided by the maintainers.

Generated by the CTIWATCH analysis pipeline from this CVE's metadata (CVSS, EPSS, KEV status, exploit intelligence). Verify against vendor advisories before acting.

Technical Analysis

CVE-2021-4281 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 9.8.