# MAL-2026-5437: Malicious code in commons-ui-styles (npm)


- **Type:** Malicious package
- **Package:** `commons-ui-styles` (npm)
- **Published:** 9 Jun 2026
- **Also known as:** GHSA-3w2q-76fx-mcgj

## What is MAL-2026-5437?

MAL-2026-5437 is a malicious package in commons-ui-styles, published on 9 Jun 2026. 

### Official description

commons-ui-styles@99.9.1 is an empty placeholder package (index.js exports `{}`, description/author blank, version bumped to 99.9.1 — the classic dependency-confusion override shape) whose only on-install effect is dependency resolution. Its package.json declares a transitive dependency `ltidisafe` resolved from a hardcoded non-registry tarball URL (`https://ltidi.storage.googleapis.com/depenconf/ltidisafe-2.9.6.tgz`) on a Google Cloud Storage bucket. The path segment literally contains `depenconf`, indicating dependency-confusion tooling. On `npm install commons-ui-styles`, npm fetches whatever bytes that bucket currently serves and installs them as a dependency; any preinstall/install/postinstall lifecycle scripts in the fetched tarball run on the installer's host. The bucket owner controls the payload contents at any time, with no version pinning to the npm registry, no integrity check beyond what npm computes against the live download, and no relationship to a documented publisher.

Any computer that has this package installed or running should be considered fully compromised. All secrets and keys stored on that computer should be rotated immediately from a different computer. The package should be removed, but as full control of the computer may have been given to an outside entity, there is no guarantee that removing the package will remove all malicious software resulting from installing it.

## What should I do about MAL-2026-5437?

Remove the package from your dependencies and lockfiles, then rotate any secrets on machines where it was installed.

## Fix prompt for AI coding agents

```text
MAL-2026-5437 is a malicious package: commons-ui-styles (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-2026-5437/ (Markdown: https://insights.sbomify.com/MAL-2026-5437/index.md)
```

## Sources

- OSV: https://osv.dev/vulnerability/MAL-2026-5437

---
From sbomify Insights: https://insights.sbomify.com/MAL-2026-5437/
Summaries are generated and may contain mistakes; the official description above is the record.