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CVE-2026-62420

CVE-2026-62420 · Cross-project cluster migration bypasses project restrictions via cluster notification flag

This page contains facts from public vulnerability sources. Check the original advisory before updating.

An authorization bypass vulnerability in LXD allows an authenticated attacker to bypass target project security restrictions during cross-project instance migrations. When moving an instance cross-project to a different cluster member via POST /1.0/instances/{name} with migration: true, project: <target>, and target: <member>, the destination node skips all project restriction checks because the request arrives as an internal cluster notification. An attacker can exploit this to introduce disallowed instance configurations into a restricted project.

CVSS 9.9 · Critical · EPSS 0.5% · Fix available

Published
Updated

Stack: system

Affected products and versions

  • lxd

    Versions
    • ≥ 5.0.0, < 5.0.8: Affected (semver)
    • ≥ 5.21.0, < 5.21.6: Affected (semver)
    • ≥ 6.0, < 6.10: Affected (semver)

    Update to 5.0.8; Update to 5.21.6; Update to 6.10

  • lxd Debian:12

    Versions
    • 5.0.2+git20231211.1364ae4-1
    • 5.0.2+git20231211.1364ae4-2
    • 5.0.2+git20231211.1364ae4-3
    • 5.0.2+git20231211.1364ae4-4
    • 5.0.2+git20231211.1364ae4-5
    • 5.0.2+git20231211.1364ae4-6
    • 5.0.2+git20231211.1364ae4-7
    • 5.0.2+git20231211.1364ae4-8
    • 5.0.2+git20231211.1364ae4-9
    • 5.0.2-5
    • 5.0.2-5+deb12u1
    • 5.0.2-5+deb12u2
    • 5.0.2-5+deb12u3
    • 5.0.2-5+deb12u4
    • 5.0.2-5+deb12u5
    • 5.0.2-5+deb12u6
    • 5.0.2-6
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • lxd Debian:13

    Versions
    • 5.0.2+git20231211.1364ae4-9
    • 5.0.2+git20231211.1364ae4-9+deb13u1
    • 5.0.2+git20231211.1364ae4-9+deb13u2
    • 5.0.2+git20231211.1364ae4-9+deb13u3
    • 5.0.2+git20231211.1364ae4-9+deb13u4
    • 5.0.2+git20231211.1364ae4-9+deb13u5
    • 5.0.2+git20231211.1364ae4-9+deb13u6
    • 5.0.2+git20231211.1364ae4-9+deb13u7
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • lxd Ubuntu:Pro:16.04:LTS

    Versions
    • 0.20-0ubuntu4
    • 0.21-0ubuntu3
    • 0.21-0ubuntu5
    • 0.22-0ubuntu1
    • 0.22-0ubuntu2
    • 0.23-0ubuntu1
    • 0.23-0ubuntu2
    • 0.23-0ubuntu3
    • 0.24-0ubuntu2
    • 0.24-0ubuntu3
    • 0.24-0ubuntu4
    • 0.25-0ubuntu1
    • 0.26-0ubuntu2
    • 0.26-0ubuntu3
    • 0.27-0ubuntu1
    • 0.27-0ubuntu2
    • 2.0.0~beta1-0ubuntu3
    • 2.0.0~beta1-0ubuntu4
    • 2.0.0~beta2-0ubuntu1
    • 2.0.0~beta2-0ubuntu2
    • 2.0.0~beta3-0ubuntu1
    • 2.0.0~beta3-0ubuntu2
    • 2.0.0~beta3-0ubuntu3
    • 2.0.0~beta3-0ubuntu4
    • 2.0.0~beta4-0ubuntu1
    • 2.0.0~beta4-0ubuntu2
    • 2.0.0~beta4-0ubuntu3
    • 2.0.0~beta4-0ubuntu4
    • 2.0.0~beta4-0ubuntu5
    • 2.0.0~beta4-0ubuntu6
    • 2.0.0~beta4-0ubuntu7
    • 2.0.0~rc1-0ubuntu1
    • 2.0.0~rc1-0ubuntu2
    • 2.0.0~rc1-0ubuntu3
    • 2.0.0~rc2-0ubuntu2
    • 2.0.0~rc2-0ubuntu3
    • 2.0.0~rc3-0ubuntu1
    • 2.0.0~rc3-0ubuntu2
    • 2.0.0~rc3-0ubuntu3
    • 2.0.0~rc3-0ubuntu4
    • 2.0.0~rc4-0ubuntu1
    • 2.0.0~rc5-0ubuntu1
    • 2.0.0~rc6-0ubuntu1
    • 2.0.0~rc6-0ubuntu2
    • 2.0.0~rc7-0ubuntu1
    • 2.0.0~rc7-0ubuntu2
    • 2.0.0~rc8-0ubuntu1
    • 2.0.0~rc8-0ubuntu2
    • 2.0.0~rc8-0ubuntu3
    • 2.0.0~rc8-0ubuntu5
    • 2.0.0~rc8-0ubuntu6
    • 2.0.0~rc8-0ubuntu7
    • 2.0.0~rc9-0ubuntu2
    • 2.0.0~rc9-0ubuntu3
    • 2.0.0~rc9-0ubuntu4
    • 2.0.0~rc9-0ubuntu5
    • 2.0.0-0ubuntu1
    • 2.0.0-0ubuntu2
    • 2.0.0-0ubuntu3
    • 2.0.0-0ubuntu4
    • 2.0.1-0ubuntu1~16.04.1
    • 2.0.2-0ubuntu1~16.04.1
    • 2.0.3-0ubuntu1~ubuntu16.04.2
    • 2.0.4-0ubuntu1~ubuntu16.04.1
    • 2.0.5-0ubuntu1~ubuntu16.04.1
    • 2.0.8-0ubuntu1~ubuntu16.04.1
    • 2.0.8-0ubuntu1~ubuntu16.04.2
    • 2.0.9-0ubuntu1~16.04.1
    • 2.0.9-0ubuntu1~16.04.2
    • 2.0.10-0ubuntu1~16.04.1
    • 2.0.10-0ubuntu1~16.04.2
    • 2.0.11-0ubuntu1~16.04.2
    • 2.0.11-0ubuntu1~16.04.4
    • 2.0.11-0ubuntu1~16.04.4+esm1
    • 2.0.11-0ubuntu1~16.04.4+esm2
    • 2.0.11-0ubuntu1~16.04.4+esm3
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • lxd Ubuntu:Pro:18.04:LTS

    Versions
    • 2.18-0ubuntu6
    • 2.19-0ubuntu1
    • 2.20-0ubuntu3
    • 2.20-0ubuntu4
    • 2.21-0ubuntu1
    • 2.21-0ubuntu2
    • 2.21-0ubuntu3
    • 2.21-0ubuntu4
    • 3.0.0~beta2-0ubuntu3
    • 3.0.0~beta3-0ubuntu3
    • 3.0.0~beta5-0ubuntu2
    • 3.0.0~beta7-0ubuntu1
    • 3.0.0-0ubuntu1
    • 3.0.0-0ubuntu2
    • 3.0.0-0ubuntu3
    • 3.0.0-0ubuntu4
    • 3.0.1-0ubuntu1~18.04.1
    • 3.0.2-0ubuntu1~18.04.1
    • 3.0.3-0ubuntu1~18.04.1
    • 3.0.3-0ubuntu1~18.04.2
    • 3.0.3-0ubuntu1~18.04.2+esm1
    • 3.0.3-0ubuntu1~18.04.2+esm2
    • 3.0.3-0ubuntu1~18.04.2+esm3
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • lxd Ubuntu:20.04:LTS

    Versions
    • 1:0.7
    • 1:0.8
    • 1:0.9
    • 1:0.10
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

Original sources

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