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npm · Malicious package advisory

Malware

isotopet4s-layout

GHSA-wjr9-f94m-5646

Malicious code in isotopet4s-layout (npm)

Details

**Severity:** Critical

**Affected versions:** `= 99.99.1`

The package communicates with a domain associated with malicious activity.## Source: ossf-package-analysis (89341dbe7c72a6b4924313c2697d976b5570b3c9056de1b6ebf35ad41337387d)
The OpenSSF Package Analysis project identified 'isotopet4s-layout' @ 99.99.1 (npm) as malicious.

It is considered malicious because:

- The package executes one or more commands associated with malicious behavior.

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Credit: [OpenSSF](https://github.com/ossf/malicious-packages) ([source](https://github.com/ossf/malicious-packages/blob/05b419acdcdd6e02782971da765f32a22a1aed8e/osv/malicious/npm/isotopet4s-layout/MAL-2025-6842.json))

**References:**
- https://github.com/ossf/malicious-packages/blob/05b419acdcdd6e02782971da765f32a22a1aed8e/osv/malicious/npm/isotopet4s-layout/MAL-2025-6842.json
- https://github.com/advisories/GHSA-wjr9-f94m-5646

Compromised versions (1)

  • = 99.99.1

Any computer that installed or ran a compromised version should be considered fully compromised. Rotate every secret on that machine from a clean environment.