CVE-2021-43309: Litejs Uri-Template-Lite

High severity, CVSS 7.5. EPSS: 1% chance of exploitation in the next 30 days.

An exponential ReDoS (Regular Expression Denial of Service) can be triggered in the uri-template-lite npm package, when an attacker is able to supply arbitrary input to the "URI.expand" method

Affected products

• Litejs Uri-Template-Lite: any version

Published 2022-08-24. Last modified 2026-06-17.