MAL-2026-17528 Malicious code in tiny-viewport-unit-calc (npm)
Malicious package
Published
MAL-2026-17528 is a malicious package: tiny-viewport-unit-calc (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-2026-17528/ (Markdown: https://insights.sbomify.com/MAL-2026-17528/index.md)
- Package
- tiny-viewport-unit-calc
- Registry
- npm
What is MAL-2026-17528?
MAL-2026-17528 is a malicious package in tiny-viewport-unit-calc, published on 4 Oct 2026.
Official description
The package ships thunderboltRegistry.js, a module that imports Node's child_process primitives and executes
whoami plus repeated ping commands against external hostnames, with POST calls present in the same file. The pattern (whoami capture + repeated ping-based beacons + outbound POSTs) is host-reconnaissance and DNS/ICMP-channel exfiltration shape, directed from the installer's machine to an external endpoint. The behavior is unrelated to the package's advertised purpose (a trivial viewport-unit calculator) and provides no functionality to a consumer; its only effect is to leak host identity information off-host when the module is loaded or invoked.What should I do about MAL-2026-17528?
Remove the package from your dependencies and lockfiles, then rotate any secrets on machines where it was installed.