GO-2026-6367

    Dashboard / Vulnerabilities / GO-2026-6367

    GO-2026-6367

    Published: 10 Sept 2026Last Modified: 10 Sept 2026

    Summary: Cilium may unexpectedly allow ingress traffic from the local namespace when a Kubernetes NetworkPolicy is configured with an ipBlock match in github.com/cilium/cilium

    Details: Cilium may unexpectedly allow ingress traffic from the local namespace when a Kubernetes NetworkPolicy is configured with an ipBlock match in github.com/cilium/cilium

    References: https://github.com/cilium/cilium/security/advisories/GHSA-fm8w-2m5w-9j7r, https://nvd.nist.gov/vuln/detail/CVE-2026-56743, https://github.com/cilium/cilium/commit/1c84ae3b58a7cd54f7ee355e6c524c82f620eae8, https://github.com/cilium/cilium/commit/bacea640404c0805c23515353dc1681c5bf35171, https://github.com/cilium/cilium/pull/46305, https://github.com/cilium/cilium/pull/46456, https://github.com/cilium/cilium/releases/tag/v1.19.5

    Affected packages

    Package

    Name: github.com/cilium/cilium

    Purl: pkg:golang/github.com/cilium/cilium

    Affected ranges

    Type: SEMVER

    Events:

    Introduced- 1.19.0
    Fixed -1.19.5

    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
    GO-2026-6367 | CVE-DB