pure_opossum_amaranth-54

GHSA-2wgq-m2g9-mxg2

Malicious code in pure_opossum_amaranth-54 (npm)

Details

**Severity:** Critical

**Affected versions:** `= 2.3.2`

Part of a self-republishing campaign: generated names of the form <adjective>_<animal>_<colour>-<number>, each package shipping the same autopublish.js, which runs `npm publish --access public` to publish the package again. Self-replicating publication is the propagation step of a registry worm and fills the registry with copies. Version examined: 2.3.2; tarball SHA-256 0fe7b3d8ed7ec429ff5f53971bb933640ddb717f2dd39621a5d435b7664ac18a.

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Credit: [OpenSSF](https://github.com/ossf/malicious-packages) ([source](https://github.com/ossf/malicious-packages/blob/65d7c0b05e1069e74e09136ec74ac3530ebad741/osv/malicious/npm/pure_opossum_amaranth-54/MAL-2026-18615.json))

**References:**
- https://github.com/ossf/malicious-packages/blob/65d7c0b05e1069e74e09136ec74ac3530ebad741/osv/malicious/npm/pure_opossum_amaranth-54/MAL-2026-18615.json
- https://github.com/advisories/GHSA-2wgq-m2g9-mxg2

Compromised versions (1)

= 2.3.2

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