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Malicious package

@woodpecker-web-shared/componentsnpm

Advisory published Updated

@woodpecker-web-shared/components is a confirmed malicious npm package (MAL-2026-16354) that steals credentials and exfiltrates sensitive data (malicious versions 1.20.4, 2.20.5, 4.20.5). Do not install it — remove it immediately and rotate any exposed credentials.

Malicious code in @woodpecker-web-shared/components (npm)

MAL-2026-16354
Immediate action
Remove the package, then rotate any secrets the build/runtime could reach.
npm uninstall @woodpecker-web-shared/components

What this malware does

On npm install, the package's postinstall hook runs node index.js, which collects installer host identifiers (os.hostname(), os.userInfo().username, os.platform(), architecture, cwd, node version, npm_lifecycle_event) and POSTs them as JSON to a hardcoded third-party collector at https://webhook.site/d9bc4bcc-ce74-4193-ae4e-96d234bb2220. The payload includes a src: 'loMesb' tag consistent with a campaign identifier used to correlate exfiltrated data across victims. The @woodpecker-web-shared/components scope/name has no legitimate reason to transmit installer identity to an anonymous webhook collector at install time, and the behavior fires automatically without user interaction. This is a recon beacon consistent with a dependency-confusion or typosquat lure.

Any computer that has this package installed or running should be considered fully compromised. All secrets and keys stored on that computer should be rotated immediately from a different computer. The package should be removed, but as full control of the computer may have been given to an outside entity, there is no guarantee that removing the package will remove all malicious software resulting from installing it.

Malicious versions

3 flagged
1.20.42.20.54.20.5

Indicators of compromise (SHA-256)

5f5f21bcc5464689c5b7c70819eeca4ea481f76b5f7dac0358cfe2d967da235f
1b555b1ba3b71b1d8d4331cb66ba7d95e5bb16fb1d92f606a6c1cc0a3ab2f251
499bf987e986573336604e51238016f2425a0cf9eb2b703160e36d26befcf2f1
a8758860e4cd2b09cae7f28336690dd33e0ac17d6bb3a44990a74b0e8d009942

Detection & response playbook

Credential / info stealer
  1. Find it

    Search your lockfiles and build artifacts for @woodpecker-web-shared/components (3 malicious versions).

  2. If you installed it — respond

    @woodpecker-web-shared/components 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.

  3. Did it already run?

    If @woodpecker-web-shared/components 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. @woodpecker-web-shared/components on npm has been identified as a malicious package (versions 1.20.4, 2.20.5, 4.20.5 flagged). It should be removed immediately — do not install or keep it in your dependency tree.

Campaign

IN-MAL-2026-020265IN-MAL-2026-020319IN-MAL-2026-020318GHSA-44hm-95r4-wcrf

References

Credits

  • Amazon Inspector · finder

Detect & block this

O3 blocks @woodpecker-web-shared/components-class packages before install and in CI — and if it already ran, its runtime egress monitoring catches the credential exfiltration and severs the channel.

Explore

@woodpecker-web-shared/components (npm) malicious package — MAL-2026-16354 | O3 Security