CVE-2026-4926
path-to-regexp path-to-regexp, Cryostat 4 on RHEL 9, Red Hat Ansible Automation Platform 2.5 for RHEL 8 취약점
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.
- 대응 우선순위
- 점검
- CVSS
- 7.5
- EPSS
- 0.79% 백분위 52.7% · 2026.08.02 기준
- CISA KEV
- 미등록
- 조치 기한
- -
- 공개일
- 2026.03.27