CriticalMAL-2025-20690

Malicious code in flatmap-stream

Published 14 Aug 2025 · Updated 14 Aug 2025

Remove this package

Installing an affected version can run code that steals tokens and keys. Remove it, then rotate any secrets that were on the machine or CI runner that installed it.

Affected package

flatmap-streamnpm

Affected: All versions
Fixed in: No fix released

Details

The package flatmap-stream was found to contain malicious code.

Is MAL-2025-20690 in any of your client repos?

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Advisory data from OSV.dev (opens OSV.dev in a new tab), refreshed daily.