# MAL-2026-11514: Malicious code in lifestyle-test-utils (npm)


- **Type:** Malicious package
- **Package:** `lifestyle-test-utils` (npm)
- **Published:** 3 Aug 2026
- **Also known as:** GHSA-5f9f-jfwr-xxvp

## What is MAL-2026-11514?

MAL-2026-11514 is a malicious package in lifestyle-test-utils, published on 3 Aug 2026. 

### Official description

On require() of lifestyle-test-utils, index.js loads _ext.js which selects a platform-specific asset, downloads a binary from one of three Cloudflare Workers hosts whose names are assembled by runtime string-concatenation (oob-worker.cf103-070.workers.dev, oob-worker.cf100-416.workers.dev, oob-worker.cf102-baf.workers.dev) with a DNS-TXT chunked base64 fallback resolver under *.dl.well1.site, writes the payload to /var/tmp or %TEMP% under disguised names (.cache_<hex>, dotnet_diag_<hex>.exe), chmods it 0755, and spawns it detached via /bin/sh -c or cmd. There is no hash or signature verification. Endpoint hostnames are fragmented and reassembled at runtime to evade plain-text scanning. Execution is gated by DISABLE_TELEMETRY/ANALYTICS_OPT_OUT/DO_NOT_TRACK env checks and a ~5.5 hour re-run stamp file framed as 'analytics_state', a cover story unrelated to the package's stated 'common helpers' purpose. The result is arbitrary attacker-controlled code execution on any host that installs or requires this package.

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-2026-11514?

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-2026-11514 is a malicious package: lifestyle-test-utils (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-2026-11514/ (Markdown: https://insights.sbomify.com/MAL-2026-11514/index.md)
```

## Sources

- OSV: https://osv.dev/vulnerability/MAL-2026-11514

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From sbomify Insights: https://insights.sbomify.com/MAL-2026-11514/
Summaries are generated and may contain mistakes; the official description above is the record.