Is CVE-2021-4329 actively exploited?

No active exploitation of CVE-2021-4329 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2021-4329 be exploited remotely?

Yes. CVE-2021-4329 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2021-4329?

CVE-2021-4329 has a CVSS score of 9.8 (CRITICAL).

HOME VULNERABILITIESCVE-2021-4329

CRITICAL

CVE-2021-4329

CWE-77Published: March 5, 2023· Updated: Jun 17, 2026

9.8

CVSS v3.1

Official Description

A vulnerability, which was classified as critical, has been found in json-logic-js 2.0.0. Affected by this issue is some unknown functionality of the file logic.js. The manipulation leads to command injection. Upgrading to version 2.0.1 is able to address this issue. The patch is identified as c1dd82f5b15d8a553bb7a0cfa841ab8a11a9c227. It is recommended to upgrade the affected component. VDB-222266 is the identifier assigned to this vulnerability.

NVD Source

Risk Analysis

The json-logic-js library contains a command injection vulnerability that allows remote attackers to execute arbitrary commands. The critical CVSS score of 9.8 highlights the severity of this flaw.

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

Recommended Action

Users must upgrade to json-logic-js version 2.0.1 or apply the patch identified by commit c1dd82f5b15d8a553bb7a0cfa841ab8a11a9c227.

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-2021-4329 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.