CLEANSTART-2026-XC26421

    Dashboard / Vulnerabilities / CLEANSTART-2026-XC26421

    CLEANSTART-2026-XC26421

    Published: 8 Sept 2026Last Modified: 8 Sept 2026

    Summary: Previously, after a channel has been established, a malicious peer could send crafted messages that would deadlock the entire connection

    Details: Multiple security vulnerabilities affect the git-lfs package. Previously, after a channel has been established, a malicious peer could send crafted messages that would deadlock the entire connection. See references for individual vulnerability details.

    References: https://github.com/cleanstart-dev/cleanstart-security-advisories/tree/main/advisories/2026/CLEANSTART-2026-XC26421.json, https://osv.dev/vulnerability/CVE-2021-38561, https://osv.dev/vulnerability/CVE-2022-27191, https://osv.dev/vulnerability/CVE-2026-46600, https://osv.dev/vulnerability/CVE-2026-56855, https://osv.dev/vulnerability/CVE-2026-78662, https://nvd.nist.gov/vuln/detail/CVE-2021-38561, https://nvd.nist.gov/vuln/detail/CVE-2022-27191, https://nvd.nist.gov/vuln/detail/CVE-2026-46600, https://nvd.nist.gov/vuln/detail/CVE-2026-56855, https://nvd.nist.gov/vuln/detail/CVE-2026-78662

    Affected packages

    Package

    Name: git-lfs

    Purl:

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -3.7.1-r3

    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