MAL-2026-17521

    Dashboard / Malicious Package / MAL-2026-17521

    MAL-2026-17521

    Published: 4 Oct 2026Last Modified: 4 Oct 2026

    Summary: Malicious code in rgx33-flex-layout-core (npm)

    Details: Source: amazon-inspector (02200327d66cf0661b787f58049b55b5fbb95dfb76fbb81a679cc71439bd85eb) Package name and exports (thunderboltRegistry, siteAssetsRegistry, editorRegistry, corvidRegistry, etc.) impersonate internal Wix thunderbolt registry packages, targeting Wix build pipelines via dependency confusion. On require, thunderboltRegistry.js executes `id` and `uname -r` via child_process.execSync and collects hostname, pid, Node.js version, and platform. These values are encoded into subdomains of an attacker-controlled Interactsh/OAST callback domain (davdpb8lhot13kgmnhp0863x9g83mpswq.oast.live) and also POSTed to a webhook.site collector (webhook.site/0492a36c-4d7b-408a-865c-226db25987ba). The exfiltration behavior has no relation to the package's advertised 'flexbox layout utilities' purpose, and the manifest references to static.parastorage.com paths reinforce the Wix-targeted dependency-confusion shape.

    References: https://www.npmjs.com/package/rgx33-flex-layout-core/v/1.0.0

    Affected packages

    Package

    Name: rgx33-flex-layout-core

    Purl: pkg:npm/rgx33-flex-layout-core

    Affected ranges

    Type: N/A

    Events:

    Introduced- None
    Fixed -None

    Affected versions

    1.0.0