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Malicious package

eslint-plugin-i18n-shredditnpm

Advisory published Updated

eslint-plugin-i18n-shreddit is a confirmed malicious npm package (MAL-2026-16437) that executes malicious code on install (malicious version 99.9.9). Do not install it — remove it immediately and rotate any exposed credentials.

Malicious code in eslint-plugin-i18n-shreddit (npm)

MAL-2026-16437
Immediate action
Remove the package, then rotate any secrets the build/runtime could reach.
npm uninstall eslint-plugin-i18n-shreddit

What this malware does

[email protected] ships no ESLint plugin code; the tarball's only function is a postinstall hook (scripts.postinstall = 'node index.js') that runs automatically on npm install. index.js collects installer-side reconnaissance — os.userInfo().username, process.cwd(), os.hostname(), and the local IPv4 address — and POSTs the values as JSON to a hardcoded anonymous collector at https://webhook.site/f9bff304-3053-4d54-be05-86537267514a. Package metadata is characteristic of a dependency-confusion probe: version 99.9.9 (chosen to win resolution against a lower-versioned internal package of the same name), empty description, empty author, and no exported plugin functionality. Installing this package leaks the installer's identifiers and network position to an attacker-controlled webhook, identifying vulnerable internal build environments for follow-on targeting.

Malicious versions

1 flagged
99.9.9

Indicators of compromise (SHA-256)

3a22687900b0decfe83eda7516ec5c5169401894c98be27d115e5dffe64fc902

Detection & response playbook

Malicious package

  1. Find it

    Search your lockfiles and build artifacts for eslint-plugin-i18n-shreddit (version 99.9.9).

  2. If you installed it — respond

    Remove eslint-plugin-i18n-shreddit from your project and lockfile, then assume any secrets accessible to the build or runtime were exposed: rotate API keys, tokens, and credentials, and audit for unexpected outbound activity or persistence.

  3. Did it already run?

    If eslint-plugin-i18n-shreddit 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. eslint-plugin-i18n-shreddit on npm has been identified as a malicious package (version 99.9.9 flagged). It should be removed immediately — do not install or keep it in your dependency tree.

Campaign

IN-MAL-2026-020323

References

Credits

  • Amazon Inspector · finder

Detect & block this

O3 blocks eslint-plugin-i18n-shreddit-class packages before install and in CI — and if it already ran, its runtime egress monitoring catches the malicious outbound activity and severs the channel.

Malware detection Runtime egress monitoring

Explore

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eslint-plugin-i18n-shreddit (npm) malicious package — MAL-2026-16437 | O3 Security