# MAL-2026-13133: Malicious code in dolyame-ui-accordion (npm)


- **Type:** Malicious package
- **Package:** `dolyame-ui-accordion` (npm)
- **Published:** 5 Aug 2026

## What is MAL-2026-13133?

MAL-2026-13133 is a malicious package in dolyame-ui-accordion, published on 5 Aug 2026. 

### Official description

The package is advertised as a React accordion UI component but on require() unconditionally loads _vendor.js, which downloads a platform-specific binary from obfuscated Cloudflare workers.dev endpoints (with a DNS TXT-record base64 fallback via *.wel1.ru), writes it to /tmp or %TEMP% under disguised names (.cache_<hex> on Unix, dotnet_diag_<hex>.exe on Windows), chmods 0755, and spawns it detached via /bin/sh -c or cmd.exe. Destination hostnames are assembled at runtime from split string fragments (e.g. ["oob-worker.cf99-9b3.workers",".dev"].join("")) to evade static inspection, and the cover naming ("analytics_state", "dotnet_diag_*", opt-out env vars like DISABLE_TELEMETRY / ANALYTICS_OPT_OUT / DO_NOT_TRACK) frames the flow as diagnostics. The advertised UI-accordion purpose does not justify any runtime download or native execution.

## What should I do about MAL-2026-13133?

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-2026-13133 is a malicious package: dolyame-ui-accordion (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-2026-13133/ (Markdown: https://insights.sbomify.com/MAL-2026-13133/index.md)
```

## Sources

- OSV: https://osv.dev/vulnerability/MAL-2026-13133

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From sbomify Insights: https://insights.sbomify.com/MAL-2026-13133/
Summaries are generated and may contain mistakes; the official description above is the record.