Which versions of csv-parser-helper are malicious?

The following npm versions of csv-parser-helper are flagged malicious: 1.0.0. Treat any of these as compromised.

How do I remediate csv-parser-helper if I installed it?

csv-parser-helper is built to steal secrets, so assume every credential the build or runtime could read is compromised. Remove it from your project and lockfile, then rotate ALL exposed secrets — npm/registry tokens, cloud keys, CI/CD secrets, SSH keys, and any .env values — from a known-clean machine. Audit logs for unauthorized use of those credentials.

I already installed csv-parser-helper — how do I know if it already compromised me?

If csv-parser-helper was installed, its post-install payload may already have run. Removing the package does not undo that — check outbound connections and credential use from the install window onward.

Is csv-parser-helper part of a known attack campaign?

Yes — csv-parser-helper is associated with the IN-MAL-2026-014698, RLMA-2026-10711 campaign. Packages in the same campaign often share infrastructure and payloads, so check whether any related packages are also in your dependency tree.

How do I find csv-parser-helper across my projects, lockfiles, and CI pipelines?

Search your lockfiles and build artifacts for csv-parser-helper (version 1.0.0).

Malicious package

csv-parser-helpernpm

Advisory published Aug 5, 2026Updated Sep 24, 2026

csv-parser-helper is a confirmed malicious npm package (MAL-2026-12360) that steals credentials and exfiltrates sensitive data (malicious version 1.0.0). Do not install it — remove it immediately and rotate any exposed credentials.

Malicious code in csv-parser-helper (npm)

MAL-2026-12360

Immediate action

Remove the package, then rotate any secrets the build/runtime could reach.

npm uninstall csv-parser-helper

What this malware does

The package is advertised as a CSV parser but ships a postinstall.js that runs on npm install and performs installer-side reconnaissance and exfiltration. It shell-collects hostname, current user, working directory, uname -a, container indicators, process tree, and network information; probes AWS and Tencent instance metadata services at 169.254.169.254 and metadata.tencentyun.com; and dumps the full process environment while filtering out only npm noise (retaining any token/secret-shaped variables such as GITHUB_TOKEN, cloud provider keys, and CI credentials). The collected data is base64-encoded and exfiltrated via HTTP GET query string to a hardcoded Burp Collaborator subdomain at pzs5w7ntzhsnepwk564lyfdci3oucl0a.oastify.com. The package's stated CSV-parsing purpose is a cover story — index.js is unrelated code and no CSV functionality is present.

Malicious versions

1 flagged

1.0.0

Indicators of compromise (SHA-256)

90b87a86eaa4be59def7e48ce9b004266b8c4815a71c84fd1d3df879c702c1ca

c6d91aef4ba538d404bd30d6837084ce598f45e565f4b5bd1389b2e00fea10d4

Detection & response playbook

Credential / info stealer

Find it
Search your lockfiles and build artifacts for csv-parser-helper (version 1.0.0).
If you installed it — respond
csv-parser-helper is built to steal secrets, so assume every credential the build or runtime could read is compromised. Remove it from your project and lockfile, then rotate ALL exposed secrets — npm/registry tokens, cloud keys, CI/CD secrets, SSH keys, and any .env values — from a known-clean machine. Audit logs for unauthorized use of those credentials.
Did it already run?
If csv-parser-helper was installed, its post-install payload may already have run. Removing the package does not undo that — check outbound connections and credential use from the install window onward.

Frequently asked questions

No. csv-parser-helper on npm has been identified as a malicious package (version 1.0.0 flagged). It should be removed immediately — do not install or keep it in your dependency tree.

Campaign

IN-MAL-2026-014698RLMA-2026-10711

References

npmjs.com

Credits

Amazon Inspector · finder
ReversingLabs · finder

Detect & block this

O3 blocks csv-parser-helper-class packages before install and in CI — and if it already ran, its runtime egress monitoring catches the credential exfiltration and severs the channel.

Malware detection Runtime egress monitoring

Explore

All malware advisories How O3 detects malware Vulnerability database