MAL-2026-12360 Malicious code in csv-parser-helper (npm)
Malicious package
Published
MAL-2026-12360 is a malicious package: csv-parser-helper (npm). Every version was published to cause harm.
Task:
1. Search this repository's dependency manifests and lockfiles for the package, including transitive dependencies.
2. If it is present, remove it, regenerate the lockfile with the project's package manager, and replace whatever it was used for.
3. List any CI runners, developer machines or containers that installed it, so their secrets can be rotated.
4. If the package is not used anywhere, say so and change nothing.
Reference: https://insights.sbomify.com/MAL-2026-12360/ (Markdown: https://insights.sbomify.com/MAL-2026-12360/index.md)
- Package
- csv-parser-helper
- Registry
- npm
What is MAL-2026-12360?
MAL-2026-12360 is a malicious package in csv-parser-helper, published on 5 Aug 2026.
Official description
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.What should I do about MAL-2026-12360?
Remove the package from your dependencies and lockfiles, then rotate any secrets on machines where it was installed.