MAL-2026-16308 Malicious code in chat-adapter-matrix (npm)
Malicious package
Published
MAL-2026-16308 is a malicious package: chat-adapter-matrix (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-2026-16308/ (Markdown: https://insights.sbomify.com/MAL-2026-16308/index.md)
- Package
- chat-adapter-matrix
- Registry
- npm
What is MAL-2026-16308?
MAL-2026-16308 is a malicious package in chat-adapter-matrix, published on 21 Sep 2026.
Official description
[email protected] executes server.js from every npm lifecycle hook (preinstall, install, postinstall, prepare, prepublish, preprepare, postprepare) and from the main module. server.js issues an HTTPS GET to the hardcoded webhook host eo8f3m3ho26a0nm.m.pipedream.net with the package name embedded in the URL path (https://eo8f3m3ho26a0nm.m.pipedream.net/vercel/<pkg>). The receiving Pipedream endpoint captures the source IP, hostname context, and confirmation that this squatted name was resolved and installed. The implausibly high 99.99.99 version and the embedded 'Proof by @0xWise' string are consistent with a dependency-confusion payload designed to win version resolution against an internal package of the same name and beacon successful installs on internal build systems to the researcher/attacker's collector.
What should I do about MAL-2026-16308?
Remove the package from your dependencies and lockfiles, then rotate any secrets on machines where it was installed.