csv-parser-helper (npm) · Malicious Code
Affects csv-parser-helperSource GCVE Database
Malicious package : remove csv-parser-helper and rotate any secrets on hosts that installed it.
Data as of 26 Oct 2026, 16:15 UTC
Malicious package
Published to npm · OSV MAL-2026-12360
What to do
Remove csv-parser-helper 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 |
|---|---|---|
| npmcsv-parser-helper | Affected
| Fixed in– |
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Description
The npm package 'csv-parser-helper' version 1.0.0 is a malicious package masquerading as a CSV parser. Instead of providing CSV parsing functionality, it executes a postinstall script during npm install that collects sensitive environment and system information, including hostname, user, process details, and cloud instance metadata. This data is encoded and exfiltrated to a hardcoded external server. No legitimate CSV parsing code is present in the package.