# MAL-2026-4543: Malicious code in customerdigital-ui-containers-lib (npm)


- **Type:** Malicious package
- **Package:** `customerdigital-ui-containers-lib` (npm)
- **Published:** 20 May 2026
- **Also known as:** GHSA-fpwv-wv7c-h2mw

## What is MAL-2026-4543?

MAL-2026-4543 is a malicious package in customerdigital-ui-containers-lib, published on 20 May 2026. 

### Official description

On npm install, postinstall.js collects git identity, OS user/uid, hostname, internal network interface addresses, Cloudflare Pages environment variables, and directory listings of ~/.ssh, ~/.aws, and ~/.kube (first 5 entries of each), base64-encodes the payload, and sends it as a query string via an HTTPS GET to ho9skv69a3pbqzbzg7z1l009c0ir6hu6.oastify.com — a Burp Collaborator out-of-band exfiltration host. The script also implements explicit sandbox evasion: it returns early if the current working directory starts with /tmp, contains 'npm-', or HOME is unset, with a 'Diagnostic/2.0' User-Agent cover story. The targeted directories (~/.ssh, ~/.aws, ~/.kube) reveal credential filenames (id_rsa, credentials, config) suitable for follow-on targeted theft. The package name shape and dependency-confusion-style high version (99.12.9) are consistent with an internal-name squat reconnaissance payload.

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.

The OpenSSF Package Analysis project identified 'customerdigital-ui-containers-lib' @ 99.13.9 (npm) as malicious.

It is considered malicious because:

- The package communicates with a domain associated with malicious activity.

## What should I do about MAL-2026-4543?

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-2026-4543 is a malicious package: customerdigital-ui-containers-lib (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-2026-4543/ (Markdown: https://insights.sbomify.com/MAL-2026-4543/index.md)
```

## Sources

- OSV: https://osv.dev/vulnerability/MAL-2026-4543

---
From sbomify Insights: https://insights.sbomify.com/MAL-2026-4543/
Summaries are generated and may contain mistakes; the official description above is the record.