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Malicious code in chai-as-init (npm)

0
Critical
Published: 04/16/2026 (04/16/2026, 20:36:13 UTC)
Source: GCVE Database
Product: chai-as-init

Description

chai-as-init is a malicious npm package that when imported downloads a C2 dropper from https://api.npoint[.]io/c2e881b8bc0fe2121454 and executes it (similar to malware in to chai-await-test). --- _-= Per source details. Do not edit below this line.=-_ ## Source: amazon-inspector (86a5e85d8d41d2f731104422d3a8e4a73d02354250782e45389d28acc2332854) Package name impersonates chai-as-promised and ships a README copied from pino as cover. The exported middleware spawns a detached node child running lib/initializeCaller.js, which decodes a base64-encoded URL (https://ipcheck-hashed.vercel.app/api/auth/b4dadd6a26d820d08596) and POSTs the full process.env (`{...process.env }`) — including any AWS/GCP/CI/npm tokens — to that endpoint with header `x-secret-header: secret`. The HTTP response body is then passed to `new Function('require', response.data)` and invoked with `require`, giving the remote operator arbitrary code execution with full Node privileges on any host that imports the package and invokes the middleware. Combination of name impersonation, copied README cover, base64-obfuscated C2, bulk env exfiltration, and dynamic remote-code evaluation is the canonical supply-chain RCE shape. ## Source: ghsa-malware (c0ce99e61fda9a489c749cea51adcf66648c56d26ee18a7aa4f0100db30615f9) Any computer that has this package installed or running should be considered fully compromised. All secrets and keys stored on that computer should be rotated immediately from a different computer. The package should be removed, but as full control of the computer may have been given to an outside entity, there is no guarantee that removing the package will remove all malicious software resulting from installing it.

Affected software

npmghsa
chai-as-init
Affected versions
=1.4.6=1.4.5=1.4.7

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AI-Powered Analysis

Machine-generated threat intelligence

AILast updated: 07/06/2026, 23:24:32 UTC

Technical Analysis

chai-as-init is a malicious npm package that impersonates chai-as-promised and uses a copied README from pino as a cover. Its exported middleware spawns a detached Node.js child process which decodes a base64-encoded URL and sends the full environment variables, including AWS, GCP, CI, and npm tokens, to a remote endpoint with a secret header. The response is dynamically evaluated as JavaScript code with full Node.js privileges, enabling arbitrary remote code execution. This supply-chain attack vector combines name impersonation, environment exfiltration, and dynamic remote code execution, representing a canonical supply-chain RCE threat. The affected versions are 1.4.5, 1.4.6, and 1.4.7.

Potential Impact

Any system that installs or runs chai-as-init versions 1.4.5, 1.4.6, or 1.4.7 is fully compromised. The attacker gains arbitrary code execution with full Node privileges and can exfiltrate sensitive environment variables, including cloud and CI tokens. This can lead to complete system takeover and further compromise of connected infrastructure. Removal of the package alone does not guarantee eradication of all malicious artifacts or backdoors.

Mitigation Recommendations

No official patch or fix is available. The package should be immediately removed from all systems. All secrets and keys exposed on compromised systems must be rotated from a secure, uncompromised environment. Due to the full compromise risk, affected hosts should be considered untrusted and undergo thorough investigation and remediation. Monitor for any signs of persistence or additional malware.

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Technical Details

Gcve Source
db.gcve.eu
Osv Id
MAL-2026-2891
Osv Schema Version
1.7.4
Aliases
["GHSA-7cq2-px9f-cq3g"]
Ecosystems
["npm"]
Database Specific Severity
null
Cvss Version
null

Threat ID: 6a4c342c27e9c797195fa5a2

Added to database: 07/06/2026, 23:03:08 UTC

Last enriched: 07/06/2026, 23:24:32 UTC

Last updated: 07/26/2026, 19:28:48 UTC

Views: 41

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