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npm · Malicious package advisory

Malware

express-ycsrf

GHSA-f6ph-56qc-rjpp

Malicious code in express-ycsrf (npm)

Details

**Severity:** Critical

**Affected versions:** `> 0`

The package express-ycsrf 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/71b5ccd62809b0f6e173eff59b5900130cf7fc02/osv/malicious/npm/express-ycsrf/MAL-2025-20094.json))

**References:**
- https://github.com/ossf/malicious-packages/blob/71b5ccd62809b0f6e173eff59b5900130cf7fc02/osv/malicious/npm/express-ycsrf/MAL-2025-20094.json
- https://github.com/advisories/GHSA-f6ph-56qc-rjpp

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.