nx migrate reads each target package's nx-migrations.migrations value from its manifest and extracts the referenced file to a path built by joining that value onto a temporary directory. The value is never validated, so a package whose migrations field contains .. segments (or an absolute path) steers the extraction to write outside the temporary directory. A hostile package — or any package pulled in transitively through a trusted package's packageGroup …
Nx core builds several git invocations as shell command strings with untrusted values interpolated into them, so a value that should be a git revision or ref is parsed by /bin/sh instead. Two entry points are reachable by an attacker: affected commands, where defaultBase / affected.defaultBase from nx.json (and the NX_BASE / NX_HEAD environment variables) reach git merge-base and git diff; and nx import, where a branch name advertised by …
Nx creates the Unix domain sockets for its daemon and its plugin workers in a shared temporary directory with default permissions, so any other user on the same machine can connect to them. The daemon accepts a PROCESS_IN_BACKGROUND request that names a module to load and invokes its default export, which turns socket access into code execution inside the daemon process. On a multi-user machine — a shared build server, …
The Nx self-hosted HTTP remote cache extracts downloaded cache artifacts without constraining where files are written. A malicious — or on-path (MITM) — remote cache server can return a crafted tar archive whose entries escape the cache directory and write to arbitrary locations on the machine running Nx. This arbitrary file write can be escalated to remote code execution. The directly exploitable issue is the self-hosted HTTP remote cache.
The local HTTP server started by nx graph sent Access-Control-Allow-Origin: * on every response, letting any website a developer visited read the server's responses cross-origin — including the full project graph and the output of the /help endpoint, which runs a target's configured help command. The practical impact is typically cross-origin information disclosure, but can be arbitrary command injection in rare cases.