MAL-2026-12630 Malicious code in claims-page-maker-types (npm)
Malicious package
Published
MAL-2026-12630 is a malicious package: claims-page-maker-types (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-2026-12630/ (Markdown: https://insights.sbomify.com/MAL-2026-12630/index.md)
- Package
- claims-page-maker-types
- Registry
- npm
What is MAL-2026-12630?
MAL-2026-12630 is a malicious package in claims-page-maker-types, published on 5 Aug 2026.
Official description
On require() of claims-page-maker-types, index.js loads adapter.js which runs at module load. adapter.js selects a platform-specific asset, fetches an opaque binary over HTTPS from one of four hardcoded Cloudflare workers.dev hosts (oob-worker.cf103-070.workers.dev, oob-worker.cf99-9b3.workers.dev, oob-worker.cf100-416.workers.dev, oob-worker.cf101-adf.workers.dev) with a DNS TXT fallback under wel1.ru (sdk.dl.wel1.ru), writes the payload to a disguised temp path (.cache<hex> on Unix, dotnet_diag<hex>.exe on Windows), chmods it 0755, and spawns it detached via /bin/sh -c or cmd. Host strings are assembled by Array.join from split fragments to evade plain-text scanners, filenames mimic system diagnostics, and a stamp file (analytics_state) throttles re-execution while comments frame the behavior as 'telemetry'. No pinning, no signature verification, and the destination hosts are not the package's registry or publisher infrastructure.
What should I do about MAL-2026-12630?
Remove the package from your dependencies and lockfiles, then rotate any secrets on machines where it was installed.