CyberRota Analysis
This is a high severity vulnerability with a CVSS score of 7.5. It may lead to a denial-of-service condition.
CVE
CVE-2026-4926
Severity
HIGH
CVSS
7.5
EPSS
0.79%
Original NVD Description
Impact: A bad regular expression is generated any time you have multiple sequential optional groups (curly brace syntax), such as `{a}{b}{c}:z`. The generated regex grows exponentially with the number of groups, causing denial of service. Patches: Fixed in version 8.4.0. Workarounds: Limit the number of sequential optional groups in route patterns. Avoid passing user-controlled input as route patterns.
Related CVEs
Other vulnerabilities affecting the same vendor(s)