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npm · Malicious package advisory

Malware

jsii-calc

GHSA-m5j5-5h9x-97p2

Malicious code in jsii-calc (npm)

Details

**Severity:** Critical

**Affected versions:** `> 0`

The package jsii-calc was found to contain malicious code.

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Credit: [OpenSSF](https://github.com/ossf/malicious-packages) ([source](https://github.com/ossf/malicious-packages/blob/ce5aebcf135d19fafa94c24995d7ad8fac9d024d/osv/malicious/npm/jsii-calc/MAL-2025-23949.json))

**References:**
- https://github.com/ossf/malicious-packages/blob/ce5aebcf135d19fafa94c24995d7ad8fac9d024d/osv/malicious/npm/jsii-calc/MAL-2025-23949.json
- https://github.com/advisories/GHSA-m5j5-5h9x-97p2

Compromised versions (1)

  • > 0

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