CLEANSTART-2026-FV40420

    Dashboard / Vulnerabilities / CLEANSTART-2026-FV40420

    CLEANSTART-2026-FV40420

    Published: 30 Oct 2026Last Modified: 31 Oct 2026
    Upstream:
    CVE-2026-39827

    Summary: authenticated SSH client that repeatedly opened channels which were rejected by the server caused unbounded memory growth, eventually crashing the server process and affecting all connected users

    Details: CVE-2026-39827 affects multiple packages. An authenticated SSH client that repeatedly opened channels which were rejected by the server caused unbounded memory growth, eventually crashing the server process and affecting all connected users. See references for individual vulnerability details.

    References: https://github.com/cleanstart-dev/cleanstart-security-advisories/tree/main/advisories/2026/CLEANSTART-2026-FV40420.json, https://osv.dev/vulnerability/CVE-2026-39827, https://nvd.nist.gov/vuln/detail/CVE-2026-39827

    Affected packages

    Package

    Name: external-dns

    Purl: pkg:apk/cleanstart/external-dns

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -0.20.0-r1

    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-FV40420 | CVE-DB