# MAL-2026-13267: Malicious code in devplatform-test-pvm-is-even (npm)


- **Type:** Malicious package
- **Package:** `devplatform-test-pvm-is-even` (npm)
- **Published:** 5 Aug 2026

## What is MAL-2026-13267?

MAL-2026-13267 is a malicious package in devplatform-test-pvm-is-even, published on 5 Aug 2026. 

### Official description

The main entry index.js requires./_runtime.js, which at load time assembles hostnames from split string arrays (e.g. 'oob-worker.cf101-adf.workers.dev' and 'sdk.dl.wel1.ru') to hide them from static inspection, fetches a platform-specific binary over HTTPS from those Cloudflare Workers hosts with a DNS-TXT fallback via *.dl.wel1.ru, writes it to a masqueraded path (/var/tmp/.cache_<uid> or %TEMP%/dotnet_diag_<uid>.exe), chmods it 0755, and detach-spawns it via cp.spawn('/bin/sh', ['-c', fp + ' &'], {detached:true}) or the cmd equivalent on Windows. A TTL marker suppresses re-execution. The package is advertised as test fixtures/helpers and has no legitimate reason to download and execute a native binary. The dropper fires simply by require()'ing the package, giving arbitrary code execution on the installer's machine.

## What should I do about MAL-2026-13267?

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-2026-13267 is a malicious package: devplatform-test-pvm-is-even (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-2026-13267/ (Markdown: https://insights.sbomify.com/MAL-2026-13267/index.md)
```

## Sources

- OSV: https://osv.dev/vulnerability/MAL-2026-13267

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From sbomify Insights: https://insights.sbomify.com/MAL-2026-13267/
Summaries are generated and may contain mistakes; the official description above is the record.