CVE-2019-9901

CriticalCVSS 10.0/10Last modified Jun 17, 2026

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.

Metrics

CVSS 3.0 10.0/10CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H

Weakness enumeration

CWE-706

Affected software

No affected versions have been published.

Timeline

Published: Apr 25, 2019
Last modified: Jun 17, 2026
NVD status: Modified

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