CLEANSTART-2026-SB07883

    Dashboard / Vulnerabilities / CLEANSTART-2026-SB07883

    CLEANSTART-2026-SB07883

    Published: 30 Oct 2026Last Modified: 31 Oct 2026
    Upstream:
    CVE-2026-56853

    Summary: When a server is configured to support unencrypted HTTP/2, it reads a few bytes from each new connection to see if they contain the HTTP/2 client preface

    Details: Security vulnerability affects the kubernetes package. When a server is configured to support unencrypted HTTP/2, it reads a few bytes from each new connection to see if they contain the HTTP/2 client preface.

    References: https://github.com/cleanstart-dev/cleanstart-security-advisories/tree/main/advisories/2026/CLEANSTART-2026-SB07883.json, https://osv.dev/vulnerability/CVE-2026-56853, https://nvd.nist.gov/vuln/detail/CVE-2026-56853

    Affected packages

    Package

    Name: kubernetes

    Purl: pkg:apk/cleanstart/kubernetes

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -1.36.3-r2

    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
    CLEANSTART-2026-SB07883 | CVE-DB