MAL-2026-6306 Malicious code in @gleamkit/probe (npm)

Malicious package Published
Package
@gleamkit/probe
Registry
npm

What is MAL-2026-6306?

MAL-2026-6306 is a malicious package in @gleamkit/probe, published on 23 Jun 2026.

Official description

No suspicious behaviors were detected in this package. There are no lifecycle scripts performing remote fetches, no credential or environment scraping, no hardcoded exfiltration endpoints, and no obfuscated payloads. The package contents do not exhibit any of the known supply-chain attack fingerprints.

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.

What should I do about MAL-2026-6306?

Remove the package from your dependencies and lockfiles, then rotate any secrets on machines where it was installed.

Sources

Also known as GHSA-6gc9-mcvc-x8c9.

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