critical vulnerability

Tinypool: Prototype Pollution Gadget to RCE in run() options

Fix availableCritical · CVSS 9.5EPSS 0.39%

Published Oct 5, 2026 · updated Oct 5, 2026

What to do

Upgrade to a fixed version: tinypool 2.1.2.
Redeploy and restart long-running processes so they load the fixed code.

Affected packages

npmtinypool

Vulnerable versions: < 2.1.2
Fixed in: 2.1.2

Check your project: npm ls tinypool --all

Is tinypool@2.1.2 safe to install? See the upgrade verdict →

Sources

GitHub Advisory GHSA-85c8-ppgw-ccpr
NVD CVE-2026-104849

CWE-94 Improper Control of Generation of Code ('Code Injection') · CWE-1321 Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution')

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