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npm · Malicious package advisory

Malware

koa-react-sidecar

GHSA-89hw-87hh-qqrj

Malicious code in koa-react-sidecar (npm)

Details

**Severity:** Critical

**Affected versions:** `> 0`

The package koa-react-sidecar 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/koa-react-sidecar/MAL-2025-24718.json))

**References:**
- https://github.com/ossf/malicious-packages/blob/ce5aebcf135d19fafa94c24995d7ad8fac9d024d/osv/malicious/npm/koa-react-sidecar/MAL-2025-24718.json
- https://github.com/advisories/GHSA-89hw-87hh-qqrj

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.