VULNERABILITY INTELLIGENCE
CVE-2019-9901
CVSS score6.5 MEDIUM
EPSS probability4.95%
CISA KEVNot currently listed
Published2019-04-25
Last modified2026-06-17
CVSS vectorCVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:C/C:L/I:L/A:L
Description
Envoy 1.9.0 and before does not normalize HTTP URL paths. A remote attacker may craft a relative path, e.g., something/../admin, to bypass access control, e.g., a block on /admin. A backend server could then interpret the non-normalized path and provide an attacker access beyond the scope provided for by the access control policy.
Weakness classification
- CWE-706: Use of Incorrectly-Resolved Name or Reference
Primary references
- cve@mitre.org — Issue Tracking, Mitigation, Third Party Advisory
- cve@mitre.org
- cve@mitre.org
- cve@mitre.org — Release Notes, Vendor Advisory
- af854a3a-2127-422b-91ae-364da2661108 — Issue Tracking, Mitigation, Third Party Advisory
- af854a3a-2127-422b-91ae-364da2661108
- af854a3a-2127-422b-91ae-364da2661108
- af854a3a-2127-422b-91ae-364da2661108 — Release Notes, Vendor Advisory