GHSA-j658-c56g-qxh4: Malicious code in harlow-css-mixer (npm)

Published Oct 26, 2026
·
Updated

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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.

Affected Software

2 affected components
npm/harlow-css-mixer*
npm/harlow-css-mixer>=0

Remediation

Recommended actions to resolve this vulnerability, in priority order.

  1. Remove

    Remove npm/harlow-css-mixer from your environment.

    Remove the harlow-css-mixer package from any computer where it is installed or running; removing it may not remove all malicious software resulting from installation.

  2. Operational

    Rotate all secrets and keys stored on the affected computer immediately, using a different computer.

Event History

Oct 26, 2026
Advisory Published
via GitHub·04:17 PM
Data Sourced
via GitHub·04:17 PM
DescriptionWeaknessAffected Software
Data Sourced
via OSV·04:17 PM
DescriptionAffected Software

Contact

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