vulnerability · Mon 05 Oct 2026 · 22:50 UTC
GHSA-5gmw-xhrv-c9v3: Tinypool: Prototype Pollution gadget in worker options leads to Remote Code Execution
Filed UTCSource GTH ↗
tinypool passes worker options to new Worker() by reading them off a plain object whose prototype is Object.prototype. Options the application did not set are resolved through the prototype chain and then passed explicitly to worker_threads.Worker. Node core ignores Worker options inherited from Object.prototype. By reading them and passing them explicitly, tinypool re-materialises them as own properties and defeats that protection. Two keys reach code execution: 1. …
Signals
as the pipeline stamped them- High
- Critical vulnerability
- What to do
- Critical severity — schedule an urgent patch.
CVE
KEV from CISA · EPSS from FIRST| Id | KEV | EPSS | Reference |
|---|---|---|---|
| CVE-2026-104848 | — | 0.50% | NVD ↗ |
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