CVE-2020-26311: Useragent Project Useragent

High severity, CVSS 7.5. EPSS: 0.5% chance of exploitation in the next 30 days.

Useragent is a user agent parser for Node.js. All versions as of time of publication contain one or more regular expressions that are vulnerable to Regular Expression Denial of Service (ReDoS). As of time of publication, no patches are available.

Affected products

• Useragent Project Useragent: any version

Published 2024-10-26. Last modified 2026-06-17.