CVE-2017-18077: Brace Expansion Project Brace Expansion

High severity, CVSS 7.5. EPSS: 2.6% chance of exploitation in the next 30 days.

index.js in brace-expansion before 1.1.7 is vulnerable to Regular Expression Denial of Service (ReDoS) attacks, as demonstrated by an expand argument containing many comma characters.

Affected products

• Brace Expansion Project Brace Expansion: before 1.1.7 (fixed in 1.1.7)

Published 2018-01-27. Last modified 2026-06-17.