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    CVE-2026-34179

    In Canonical LXD versions 4.12 through 6.7, the doCertificateUpdate function in lxd/certificates.go does not validate the Type field when handling PUT/PATCH requests to /1.0/certificates/{fingerprint} for restricted TLS certificate users, allowing a remote authenticated attacker to escalate privileges to cluster admin.

    Published:Apr 9, 2026
    Last Modified:Apr 22, 2026
    EPS:Apr 9, 2026
    EPSS Score:0.00115
    CVSS Score:9.1

    Affected Products

    Vendor
    Canonical
    Product
    Lxd

    Exploits

    https://github.com/canonical/lxd/security/advisories/GHSA-c3h3-89qf-jqm5https://github.com/canonical/lxd/security/advisories/GHSA-c3h3-89qf-jqm5

    Common Attack Pattern Enumeration and Classification (CAPEC)

    No CAPEC recorded yet

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    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