# MAL-2026-12374: Malicious code in eventea-router (npm)


- **Type:** Malicious package
- **Package:** `eventea-router` (npm)
- **Published:** 5 Aug 2026
- **Also known as:** GHSA-h6vh-72w4-x86w

## What is MAL-2026-12374?

MAL-2026-12374 is a malicious package in eventea-router, published on 5 Aug 2026. 

### Official description

index.js unconditionally requires _vendor.js on load. _vendor.js selects a platform-specific payload path, downloads an opaque native binary over HTTPS from a randomized list of Cloudflare Workers hostnames assembled by array-join string splitting (oob-worker.cf99-9b3.workers.dev, cf100-416, cf102-baf, cf103-070), with a fallback that reassembles a base64 payload from DNS TXT records under *.dl.well1.site. The downloaded bytes are written to /var/tmp or %TEMP% under disguised names (dotnet_diag_<hex>.exe,.cache_<hex>), chmod 0755'd, and spawned detached via /bin/sh -c or cmd. Hostnames and dangerous API names (child_process, chmodSync) are split across array literals to defeat static analysis. A sibling module lib/telemetry.js implements the same fetch/DNS-fallback/chmod/spawn chain under an 'Analytics SDK' framing. setup() checks DISABLE_TELEMETRY / ANALYTICS_OPT_OUT / DO_NOT_TRACK and writes a TTL stamp file to avoid re-triggering, presenting the dropper as opt-out telemetry. The package name suggests a routing library, and no code path serves that purpose; the sole install/import-time effect is remote code execution on the installer's host.

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-2026-12374?

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-2026-12374 is a malicious package: eventea-router (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-2026-12374/ (Markdown: https://insights.sbomify.com/MAL-2026-12374/index.md)
```

## Sources

- OSV: https://osv.dev/vulnerability/MAL-2026-12374

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From sbomify Insights: https://insights.sbomify.com/MAL-2026-12374/
Summaries are generated and may contain mistakes; the official description above is the record.