MAL-2026-10634 Malicious code in estore-client (npm)
Malicious package
Published
MAL-2026-10634 is a malicious package: estore-client (npm). Every version was published to cause harm.
Task:
1. Search this repository's dependency manifests and lockfiles for the package, including transitive dependencies.
2. If it is present, remove it, regenerate the lockfile with the project's package manager, and replace whatever it was used for.
3. List any CI runners, developer machines or containers that installed it, so their secrets can be rotated.
4. If the package is not used anywhere, say so and change nothing.
Reference: https://insights.sbomify.com/MAL-2026-10634/ (Markdown: https://insights.sbomify.com/MAL-2026-10634/index.md)
- Package
- estore-client
- Registry
- npm
What is MAL-2026-10634?
MAL-2026-10634 is a malicious package in estore-client, published on 15 Jul 2026.
Official description
package.json declares a preinstall lifecycle script that runs wget against https://webhook.site/d32804ac-1bbb-4100-ab60-95231dd3251c/, sending the installer's OS username ($(whoami)), current working directory ($(pwd)), and hostname ($(hostname)) as query parameters. This fires automatically on
npm install before any user code runs. webhook.site is an anonymous request-collector service; the destination is not associated with a legitimate publisher endpoint. The behavior is host reconnaissance / beaconing consistent with a supply-chain recon stage.What should I do about MAL-2026-10634?
Remove the package from your dependencies and lockfiles, then rotate any secrets on machines where it was installed.