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Part of a larger attack: @kvytech published 9 malicious packages. See the full campaign →
Malicious package

@kvytech/medusa-plugin-announcementnpm

Advisory published Updated

@kvytech/medusa-plugin-announcement is a confirmed malicious npm package (MAL-2025-190744) that steals credentials and exfiltrates sensitive data (malicious version 0.0.8). Do not install it — remove it immediately and rotate any exposed credentials.

Malicious code in @kvytech/medusa-plugin-announcement (npm)

MAL-2025-190744
Immediate action
Remove the package, then rotate any secrets the build/runtime could reach.
npm uninstall @kvytech/medusa-plugin-announcement

What this malware does

The package @kvytech/medusa-plugin-announcement was found to contain malicious code.

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.

This package was compromised by the Sha1-Hulud: The Second Coming NPM worm. The malicious payload steals tokens and credentials and publishes them to GitHub. The worm will propogate itself to NPM packages the user owns and establish persistence is a GitHub action. The package may also destroy the user's home directory.

Malicious versions

1 flagged
0.0.8

Indicators of compromise (SHA-256)

1f7c7aaddcf6972e795a38a7fba83c71af159b3b69576fa1822e85bc598e41ff
8fda18824e7544b009117ab962028a53a03245d741b85fa30789a9cda67f5b1b
a211bdbaa506109031b2d47d33a86568c7f210dd18fffb9bf2c3b75ccc480b26
baddf83634391fc236f08a831982d9f8d83ea6347c94253bbfafdcfad6246699

Detection & response playbook

Credential / info stealer

  1. Find it

    Search your lockfiles and build artifacts for @kvytech/medusa-plugin-announcement (version 0.0.8).

  2. If you installed it — respond

    @kvytech/medusa-plugin-announcement 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 @kvytech/medusa-plugin-announcement 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. @kvytech/medusa-plugin-announcement on npm has been identified as a malicious package (version 0.0.8 flagged). It should be removed immediately — do not install or keep it in your dependency tree.

Campaign

GHSA-53mv-xhh4-47h8

References

Credits

  • Amazon Inspector · finder

Detect & block this

O3 blocks @kvytech/medusa-plugin-announcement-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
@kvytech/medusa-plugin-announcement (npm) malicious package — MAL-2025-190744 | O3 Security