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OpenAdvisories
Malicious MAL-2026-18332 GHSA-j658-c56g-qxh4

harlow-css-mixer

npm package · versions 0.0.0-stage

Reported Oct 26, 2026 · Updated Oct 29, 2026

If this package is installed

Remove it, treat the machine (or CI runner) as compromised, and rotate every secret, token and key it could access — from a different, clean machine.

Details

Source: amazon-inspector (967e3d3d323d36c24348b9530654c33f19bb96bbc21ddeba103dd755a0c07683)
The package contains two files and no code paths that read installer secrets, perform install-time or import-time network fetches, execute remote content, or relay caller-supplied data to a third-party destination. No lifecycle scripts, droppers, credential reads, or exfiltration endpoints are present. The `0.0.0-stage` version string is consistent with a staging/placeholder release.

Source: ghsa-malware (8b980eedd59eb558f39a2675ea8570fe97d02c7b586e2a5c7f980e058d313601)
Any computer that has this package installed or running should be considered fully compromised. All secrets and keys stored on that computer should be rotated immediately from a different computer. The package should be removed, but as full control of the computer may have been given to an outside entity, there is no guarantee that removing the package will remove all malicious software resulting from installing it.