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gem · Malicious package advisory

Malware

sq-mdc

GHSA-h6jf-262m-h7cg

Malicious code in sq-mdc (RubyGems)

Details

**Severity:** Critical

**Affected versions:** `= 9.11.23`

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Credit: [OpenSSF](https://github.com/ossf/malicious-packages) ([source](https://github.com/ossf/malicious-packages/blob/9fbb5fba02ba2f02395d3d2d43c31b2c482b7a9d/osv/malicious/rubygems/sq-mdc/MAL-2025-192918.json))

**References:**
- https://github.com/ossf/malicious-packages/blob/9fbb5fba02ba2f02395d3d2d43c31b2c482b7a9d/osv/malicious/rubygems/sq-mdc/MAL-2025-192918.json
- https://github.com/advisories/GHSA-h6jf-262m-h7cg

Compromised versions (1)

  • = 9.11.23

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