Description
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.
References
- www.cve.org/CVERecord ↗
- nvd.nist.gov/vuln/detail/CVE-2026-104848 ↗
- github.com/tinylibs/tinypool/commit/24df4e730e7d0857a6d226c9b58f8924227404fd ↗
- github.com/tinylibs/tinypool/pull/134 ↗
- github.com/tinylibs/tinypool/releases/tag/v2.1.1 ↗
- github.com/tinylibs/tinypool/security/advisories/GHSA-5gmw-xhrv-c9v3 ↗
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This product uses the NVD API but is not endorsed or certified by the NVD. CVSS scores do not establish exploitation.