closure-es6

GHSA-ggvv-x4g4-2ppj

Malicious code in closure-es6 (npm)

Details

**Severity:** Critical

**Affected versions:** `= 1.0.1`

The package closure-es6 was found to contain malicious code.## Source: google-open-source-security (e0574a10de5b6d2bca40b32e3869d3a497db2729667e3523f97b8dde3f5846c7)
This package installs a dependency hosted on a custom domain that runs an
info stealer during installation. The info stealer focuses on stealing
npm, git, and other CI/CD related tokens.

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Credit: [OpenSSF](https://github.com/ossf/malicious-packages) ([source](https://github.com/ossf/malicious-packages/blob/4012598c9b06e58935bd8883f7a0cd37c3130664/osv/malicious/npm/closure-es6/MAL-2025-17150.json))

**References:**
- https://github.com/ossf/malicious-packages/blob/4012598c9b06e58935bd8883f7a0cd37c3130664/osv/malicious/npm/closure-es6/MAL-2025-17150.json
- https://www.koi.ai/blog/phantomraven-npm-malware-hidden-in-invisible-dependencies
- https://github.com/advisories/GHSA-ggvv-x4g4-2ppj

Compromised versions (1)

= 1.0.1

Any computer that installed or ran a compromised version should be considered fully compromised. Rotate every secret on that machine from a clean environment.