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npm · Malicious package advisory

Malware

jcr-hopper

GHSA-9xmv-9vqw-jm6w

Malicious code in jcr-hopper (npm)

Details

**Severity:** Critical

**Affected versions:** `>= 999.0.0`

The package communicates with a domain associated with malicious activity.

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Credit: [OpenSSF](https://github.com/ossf/malicious-packages) ([source](https://github.com/ossf/malicious-packages/blob/05b419acdcdd6e02782971da765f32a22a1aed8e/osv/malicious/npm/jcr-hopper/MAL-2025-6734.json))

**References:**
- https://github.com/ossf/malicious-packages/blob/05b419acdcdd6e02782971da765f32a22a1aed8e/osv/malicious/npm/jcr-hopper/MAL-2025-6734.json
- https://github.com/advisories/GHSA-9xmv-9vqw-jm6w

Compromised versions (1)

  • >= 999.0.0

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