npm · Malicious package advisory
Malwarerootaccessxvv-bbmarker
MAL-2026-18108
Malicious code in rootaccessxvv-bbmarker (npm)
Details
--- _-= Per source details. Do not edit below this line.=-_ ## Source: amazon-inspector (126c6e67bc80ed62f5e620ef9a8ce11ca39653348a59bc8d7a1d0cef76f72a02) package.json declares a postinstall lifecycle script that runs on `npm install` and POSTs installer host identifiers to a hardcoded webhook.site collector at https://webhook.site/8f9e5268-4fcf-47a1-97a8-681b51c1edbc/rce-proof. The script shells out to `whoami`, `hostname`, `uname`, and `node -v`, concatenates the output with the current working directory, and sends the result via `curl -X POST`. The destination is an anonymous third-party webhook aggregator unrelated to any legitimate install-time dependency. The package name self-describes as a proof-of-concept, but the behavior — automatic install-time collection and exfiltration of installer identity and host metadata to an attacker-controlled collector — is a working supply-chain attack regardless of how it is labeled.
Compromised versions (1)
- 1.0.2
Any computer that installed or ran a compromised version should be considered fully compromised. Rotate every secret on that machine from a clean environment.