permcserver
This report shows the evidence for permcserver@1.0.4. 5 of 5 known versions are blocked or flagged. See all versions.
OpenSSF/OSV Malicious Advisory
imported 3mo ago · by OpenSSF/OSVOpenSSF/OSV advisory MAL-2026-10489 confirms this npm version as malicious.
Advisory
MAL-2026-10489
Source
OpenSSF Malicious Packages via OSV
Summary
Malicious code in permcserver (npm)
Details
The package's `main` (index.js) is a 10-line FFI shim that spawns a worker, dlopens the bundled `lib-linux.so` via koffi, and immediately invokes the native entrypoint `vserver_start()`. The.so implements a VLESS-over-WebSocket proxy server: it performs the WebSocket handshake using the standard GUID `258EAFA5-E914-47DA-95CA-C5AB0DC85B11`, authenticates clients with a hardcoded UUID (`4916e0f58abc4ad4ba5d158582c60d85`), and services outbound `CONNECT %s HTTP/1.1` requests with SOCKS5/HTTP upstream proxy support — turning the installer's host into an attacker-authenticated TCP relay on the moment the package is required. The package exports no library API; starting the proxy listener is the sole effect of importing it. The binary also enumerates hosting-panel port environment variables (`PTERODACTYL_PORT`, `MC_PORT`, `MINECRAFT_PORT`, `GAME_PORT`) and embeds a decoy `:: SYSTEM ONLINE::` / `MINECRAFT SERVER` HTML page — cover-story content consistent with the package name's implied Pterodactyl/Minecraft server helper purpose, which does not match the actual proxy-backdoor payload. Symbol strings `vless_ws.c`, `relay_thread`, and `dial_tcp` are present in the stripped.so. Requiring or loading this package gives whoever knows the hardcoded UUID persistent, authenticated tunneling access through the installer's machine and the ability to execute arbitrary native code in the Node process.
Source & flagged code
0 flagged · loading sourceNo flagged code excerpts are attached to this scan.
Findings
1 High
HighOsv Malicious Advisory
Affected versions and remediation
This report applies to permcserver@1.0.4.
The same advisory and Firewall decision cover 5 recorded versions
1.0.0, 1.0.1, 1.0.3, 1.0.4, 1.0.2
The versions list below shows the verdict for each recorded version.
- Avoid installing permcserver@1.0.4. Remove it from direct dependencies and check your lockfile for transitive copies.
- Choose an independently verified alternative or release. This report does not establish that other versions are safe.
- If this version ran, investigate the affected machine and build environment. Rotate credentials it could access and rebuild from a trusted environment.
Evidence last updated: .
Source advisory published: .
This report uses published external intelligence. The advisory does not provide a separate source-code analysis for each listed version.
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