Malicious code in chai-as-chain-v2 (npm)
The npm package chai-as-chain-v2 version 1.1.1 contains malicious code that downloads and executes a command-and-control (C2) dropper from a remote URL. This behavior is similar to previously observed malware in related packages. No official patch or remediation guidance is provided.
AI Analysis
Technical Summary
The npm package chai-as-chain-v2 version 1.1.1 is identified as malicious. When imported, it downloads a C2 dropper from https://jsonkeeper[.]com/b/FAWPU and executes it, enabling potential remote control or further malicious activity. This package is flagged as a malicious package rather than a typical vulnerability. There is no CVSS score or detailed vendor advisory available, and no known exploits in the wild have been reported.
Potential Impact
The malicious code in chai-as-chain-v2 can lead to remote code execution on systems that import this package, potentially allowing attackers to execute arbitrary commands or deploy additional malware. This poses a significant security risk to developers and environments that use this package.
Mitigation Recommendations
Avoid using the chai-as-chain-v2 package, especially version 1.1.1. Remove it from any projects and replace it with trusted alternatives. Since no official patch or fix is available, the best mitigation is to not use this package at all.
Malicious code in chai-as-chain-v2 (npm)
Description
The npm package chai-as-chain-v2 version 1.1.1 contains malicious code that downloads and executes a command-and-control (C2) dropper from a remote URL. This behavior is similar to previously observed malware in related packages. No official patch or remediation guidance is provided.
Affected software
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AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The npm package chai-as-chain-v2 version 1.1.1 is identified as malicious. When imported, it downloads a C2 dropper from https://jsonkeeper[.]com/b/FAWPU and executes it, enabling potential remote control or further malicious activity. This package is flagged as a malicious package rather than a typical vulnerability. There is no CVSS score or detailed vendor advisory available, and no known exploits in the wild have been reported.
Potential Impact
The malicious code in chai-as-chain-v2 can lead to remote code execution on systems that import this package, potentially allowing attackers to execute arbitrary commands or deploy additional malware. This poses a significant security risk to developers and environments that use this package.
Mitigation Recommendations
Avoid using the chai-as-chain-v2 package, especially version 1.1.1. Remove it from any projects and replace it with trusted alternatives. Since no official patch or fix is available, the best mitigation is to not use this package at all.
Technical Details
- Gcve Source
- db.gcve.eu
- Osv Id
- MAL-2026-2886
- Osv Schema Version
- 1.7.4
- Aliases
- ["GHSA-89j2-wcf8-hqm3"]
- Ecosystems
- ["npm"]
Threat ID: 6a96f319acd9273b49e49747
Added to database: 09/01/2026, 15:45:29 UTC
Last enriched: 09/08/2026, 08:53:36 UTC
Last updated: 09/10/2026, 19:38:50 UTC
Views: 10
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