MAL-2025-190899

    Dashboard / Malicious Package / MAL-2025-190899

    MAL-2025-190899

    Published: 24 Nov 2025Last Modified: 26 Nov 2025

    Summary: Malicious code in @posthog/web-dev-server (npm)

    Details: Source: amazon-inspector (0d8d0531931bec7f4add3b4f255b7f6572d28ff3edf2774f7d076fde394eb405) The package @posthog/web-dev-server was found to contain malicious code. Source: google-open-source-security (36dda446ca469692c1b804c36a09761b8c9b3ba80d588324bd4fed0579394104) 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.

    References: https://www.aikido.dev/blog/shai-hulud-strikes-again-hitting-zapier-ensdomains, https://www.wiz.io/blog/shai-hulud-2-0-ongoing-supply-chain-attack, https://www.stepsecurity.io/blog/sha1-hulud-the-second-coming-zapier-ens-domains-and-other-prominent-npm-packages-compromised

    Affected packages

    Package

    Name: @posthog/web-dev-server

    Purl: pkg:npm/%40posthog/web-dev-server

    Affected ranges

    Type: N/A

    Events:

    Introduced- None
    Fixed -None

    Affected versions

    1.0.5