CVEvulnerability

CVE-2021-31920

6.5 MEDIUM Published 2021-05-27 Modified 2026-06-17 Official page ↗
Status
Modified
Published
2021-05-27
Last modified
2026-06-17
Assigner
[email protected]
CVSS 3.1 ([email protected])
6.5 MEDIUM — CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
CVSS 2.0 ([email protected])
4.0 MEDIUM — AV:N/AC:L/Au:S/C:P/I:N/A:N
Weaknesses
CWE-706

Description

Istio before 1.8.6 and 1.9.x before 1.9.5 has a remotely exploitable vulnerability where an HTTP request path with multiple slashes or escaped slash characters (%2F or %5C) could potentially bypass an Istio authorization policy when path based authorization rules are used.

Affected configurations

• istio istio (< 1.8.6) • istio istio (>= 1.9.0 < 1.9.5)

Related

Weakness · CWE (1)

  • CWE-706 Use of Incorrectly-Resolved Name or Reference weakness

References