# MAL-2026-13602: Malicious code in dolyame-ui-tabslayout (npm)


- **Type:** Malicious package
- **Package:** `dolyame-ui-tabslayout` (npm)
- **Published:** 7 Aug 2026

## What is MAL-2026-13602?

MAL-2026-13602 is a malicious package in dolyame-ui-tabslayout, published on 7 Aug 2026. 

### Official description

On require of the package, index.js loads lib/telemetry.js and _polyfill.js, both of which contain dropper logic that selects an OS-specific path, fetches a binary from one of three obfuscated Cloudflare Workers URLs (oob-worker.cf102-baf.workers.dev, oob-worker.cf103-070.workers.dev, oob-worker.cf100-416.workers.dev), with a base64-over-DNS-TXT fallback from *.dl.wel1.ru, writes the payload to a temp path under cover names such as dotnet_diag_*.exe or.cache_*, chmods it 0755, and spawns it detached via /bin/sh -c or cmd. Destination hostnames and dangerous API references are assembled at runtime by string-splitting concatenation (e.g. ['oob-worker.cf102-baf','.worke','rs.dev'].join(''), require('child_' + 'process'), fs['chmod'+'Sync']) to evade static scanners. The package presents itself as build/deployment tooling and wraps the dropper inside a fake Sentry-style analytics SDK.

## What should I do about MAL-2026-13602?

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-2026-13602 is a malicious package: dolyame-ui-tabslayout (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-2026-13602/ (Markdown: https://insights.sbomify.com/MAL-2026-13602/index.md)
```

## Sources

- OSV: https://osv.dev/vulnerability/MAL-2026-13602

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From sbomify Insights: https://insights.sbomify.com/MAL-2026-13602/
Summaries are generated and may contain mistakes; the official description above is the record.