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.
References (4)
Scores
CVSS v3
6.5
EPSS
0.0009
EPSS Percentile
25.3%
Attack Vector
NETWORK
CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:C/C:L/I:L/A:L
Details
CWE
CWE-706
Status
published
Products (2)
envoyproxy/envoy
< 1.9.0
envoyproxy/envoy
0 - 1.9.1Go
Published
Apr 25, 2019
Tracked Since
Feb 18, 2026