GHSA-6q5m-22mq-q2xv

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    GHSA-6q5m-22mq-q2xv

    Published: 24 May 2022Last Modified: 10 Sept 2026

    Summary: Istio Authorization Bypass Vulnerability

    Details: 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.

    References: https://nvd.nist.gov/vuln/detail/CVE-2021-31920, https://istio.io/latest/news/security/istio-security-2021-005

    Affected packages

    Package

    Name: istio.io/istio

    Purl: pkg:golang/istio.io/istio

    Affected ranges

    Type: SEMVER

    Events:

    Introduced- 0
    Fixed -1.8.6

    Affected versions

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High
    GHSA-6q5m-22mq-q2xv | CVE-DB