CVE-2022-21189: Dexie

Critical severity, CVSS 9.8. EPSS: 1.7% chance of exploitation in the next 30 days.

The package dexie before 3.2.2, from 4.0.0-alpha.1 and before 4.0.0-alpha.3 are vulnerable to Prototype Pollution in the Dexie.setByKeyPath(obj, keyPath, value) function which does not properly check the keys being set (like __proto__ or constructor). This can allow an attacker to add/modify properties of the Object.prototype leading to prototype pollution vulnerability. **Note:** This vulnerability can occur in multiple ways, for example when modifying a collection with untrusted user input.

Affected products

• Dexie Dexie: before 3.2.2 (fixed in 3.2.2); version 4.0.0 only

Published 2022-05-01. Last modified 2026-06-17.