csvflow-schema (npm) · Malicious Code
Affects csvflow-schemaSource GCVE Database
Malicious package : remove csvflow-schema and rotate any secrets on hosts that installed it.
Data as of 29 Oct 2026, 14:19 UTC
Malicious package
Published to npm · OSV MAL-2026-18357
What to do
Remove csvflow-schema from every project, lockfile and image that pulls it in. Treat any host that installed it as compromised: rotate the credentials, tokens and keys it could read, from a clean machine.
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| npmcsvflow-schema | Affected
| Fixed in– |
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Description
The npm package csvflow-schema version 1.0.0 was found to contain malicious code in its postinstall script. This script collects local system information, writes it to a temporary file, launches the Windows calculator application, and sends an HTTPS request to a hardcoded external domain with a unique install identifier. The package was removed from npm shortly after publication.