{"id":"CVE-2026-104849","revision":"c0ce67a571654c679333ab0ea99a18e0","records":[{"revision":"c0ce67a571654c679333ab0ea99a18e0","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-104849","aliases":[],"title":"Tinypool: Prototype Pollution Gadget to RCE in run() options","description":"Tinypool is a minimal Node.js worker thread pool implementation. Prior to 2.1.2, Tinypool reads filename from a caller-supplied options object in pool.run(task, options) without requiring an own property, so a polluted Object.prototype.filename can replace the intended worker module. Applications are affected only when they pass their own second-argument options object to pool.run(); calls without that argument use the trusted default options object. An attacker who can first pollute the prototype can cause the worker pool to load attacker-selected JavaScript and can read or modify task data with the host process's privileges. This issue is fixed in version 2.1.2.","state":0,"publishedAt":"2026-10-02T16:17:28.062+00:00","modifiedAt":"2026-10-06T16:35:59.948+00:00","affected":[{"ecosystem":"Vendor product","name":"tinypool","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"tinylibs\",\n                    \"product\": \"tinypool\",\n                    \"versions\": [\n                        {\n                            \"version\": \"< 2.1.2\",\n                            \"status\": \"affected\"\n                        }\n                    ]\n                }"}],"metrics":[{"system":"CVSS 4.0","vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H","score":9.5,"severity":"CRITICAL"}],"references":["https://github.com/tinylibs/tinypool/security/advisories/GHSA-85c8-ppgw-ccpr","https://github.com/tinylibs/tinypool/pull/135","https://github.com/tinylibs/tinypool/commit/f41411a3e23324c674f35a19a3240f7a7c40ffbf","https://github.com/tinylibs/tinypool/releases/tag/v2.1.2"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-104849","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-104849","identifiers":["CVE-2026-104849"]},"retained":false,"historicalAffected":[]}],"coverage":[]}