CVE-2026-104848

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.

CVSS

No CVSS.

References

Link	Resource
https://github.com/tinylibs/tinypool/commit/24df4e730e7d0857a6d226c9b58f8924227404fd
https://github.com/tinylibs/tinypool/pull/134
https://github.com/tinylibs/tinypool/releases/tag/v2.1.1
https://github.com/tinylibs/tinypool/security/advisories/GHSA-5gmw-xhrv-c9v3
https://github.com/tinylibs/tinypool/security/advisories/GHSA-5gmw-xhrv-c9v3

Configurations

No configuration.

History

02 Oct 2026, 18:17

Type	Values Removed	Values Added
References	~~() https://github.com/tinylibs/tinypool/security/advisories/GHSA-5gmw-xhrv-c9v3 -~~	() https://github.com/tinylibs/tinypool/security/advisories/GHSA-5gmw-xhrv-c9v3 -

02 Oct 2026, 17:17

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-10-02 17:17

Updated : 2026-10-02 18:33

NVD link : CVE-2026-104848

Mitre link : CVE-2026-104848

CVE.ORG link : CVE-2026-104848

JSON object : View

Products Affected

No product.

CWE

CWE-1321

Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution')

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