MAL-2026-15549 Malicious code in ckeditor5-ckbox (npm)
Malicious package
Published
MAL-2026-15549 is a malicious package: ckeditor5-ckbox (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-2026-15549/ (Markdown: https://insights.sbomify.com/MAL-2026-15549/index.md)
- Package
- ckeditor5-ckbox
- Registry
- npm
What is MAL-2026-15549?
MAL-2026-15549 is a malicious package in ckeditor5-ckbox, published on 29 Aug 2026.
Official description
Unscoped npm package ckeditor5-ckbox mimics the legitimate @ckeditor/ckeditor5-ckbox plugin. package.json declares a preinstall hook (
node index.js) that runs on npm install. index.js collects installer machine identifiers — os.hostname(), os.userInfo() (username, uid, gid, shell), platform/arch, home directory, cwd, and the output of whoami and id executed via child_process — and POSTs the JSON to the hardcoded Burp Collaborator OAST domain https://shdu19bid9mc4e6lezjmldk0erki88wx.oastify.com/system-info. The package contains no CKEditor functionality; the sole payload is the install-time beacon. Author/description are empty and the name is a typosquat of the scoped legitimate package.What should I do about MAL-2026-15549?
Remove the package from your dependencies and lockfiles, then rotate any secrets on machines where it was installed.