Threat database

Tinypool versions prior to 2.1.2 contain a code injection vulnerability due to improper handling of the filename property in the options object passed to pool.run(). An attacker who can pollute Object.prototype.filename can cause the worker pool to load malicious JavaScript code, potentially leading to arbitrary code execution with the host process's privileges. This vulnerability is fixed in version 2.1.2.

Tinypool is a minimal Node.js worker thread pool implementation. Prior to 2.1.1, Tinypool constructs ThreadPool.options from a normal options object and reads the execArgv and env worker options in dist/index.js, allowing values inherited from a polluted Object.prototype to be copied into own properties and passed to worker_threads.Worker. An attacker who can first pollute either property can cause each newly spawned worker to load attacker-selected JavaScript through command-line preload arguments or NODE_OPTIONS, resulting in code execution with the host process's privileges and possible access to CI secrets, signing material, or build artifacts. This issue is fixed in version 2.1.1.