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Vulnerable Software

Vulnerability Details CVE-2026-34178

In Canonical LXD before 6.8, the backup import path validates project restrictions against backup/index.yaml in the supplied tar archive but creates the instance from backup/container/backup.yaml, a separate file in the same archive that is never checked against project restrictions. An authenticated remote attacker with instance-creation permission in a restricted project can craft a backup archive where backup.yaml carries restricted settings such as security.privileged=true or raw.lxc directives, bypassing all project restriction enforcement and allowing full host compromise.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.001
EPSS Ranking 16.2%
CVSS Severity
CVSS v3 Score 9.1
Products affected by CVE-2026-34178
  • Canonical » Lxd » Version: 4.12
    cpe:2.3:a:canonical:lxd:4.12
  • Canonical » Lxd » Version: 4.13
    cpe:2.3:a:canonical:lxd:4.13
  • Canonical » Lxd » Version: 4.14
    cpe:2.3:a:canonical:lxd:4.14
  • Canonical » Lxd » Version: 4.15
    cpe:2.3:a:canonical:lxd:4.15
  • Canonical » Lxd » Version: 4.16
    cpe:2.3:a:canonical:lxd:4.16
  • Canonical » Lxd » Version: 4.17
    cpe:2.3:a:canonical:lxd:4.17
  • Canonical » Lxd » Version: 4.18
    cpe:2.3:a:canonical:lxd:4.18
  • Canonical » Lxd » Version: 4.19
    cpe:2.3:a:canonical:lxd:4.19
  • Canonical » Lxd » Version: 4.20
    cpe:2.3:a:canonical:lxd:4.20
  • Canonical » Lxd » Version: 4.21
    cpe:2.3:a:canonical:lxd:4.21
  • Canonical » Lxd » Version: 4.22
    cpe:2.3:a:canonical:lxd:4.22
  • Canonical » Lxd » Version: 4.23
    cpe:2.3:a:canonical:lxd:4.23
  • Canonical » Lxd » Version: 4.24
    cpe:2.3:a:canonical:lxd:4.24
  • Canonical » Lxd » Version: 5.0.0
    cpe:2.3:a:canonical:lxd:5.0.0
  • Canonical » Lxd » Version: 5.0.1
    cpe:2.3:a:canonical:lxd:5.0.1
  • Canonical » Lxd » Version: 5.0.2
    cpe:2.3:a:canonical:lxd:5.0.2
  • Canonical » Lxd » Version: 5.0.3
    cpe:2.3:a:canonical:lxd:5.0.3
  • Canonical » Lxd » Version: 5.0.4
    cpe:2.3:a:canonical:lxd:5.0.4
  • Canonical » Lxd » Version: 5.0.5
    cpe:2.3:a:canonical:lxd:5.0.5
  • Canonical » Lxd » Version: 5.21.0
    cpe:2.3:a:canonical:lxd:5.21.0
  • Canonical » Lxd » Version: 5.21.1
    cpe:2.3:a:canonical:lxd:5.21.1
  • Canonical » Lxd » Version: 5.21.2
    cpe:2.3:a:canonical:lxd:5.21.2
  • Canonical » Lxd » Version: 5.21.3
    cpe:2.3:a:canonical:lxd:5.21.3
  • Canonical » Lxd » Version: 5.21.4
    cpe:2.3:a:canonical:lxd:5.21.4
  • Canonical » Lxd » Version: 6.0
    cpe:2.3:a:canonical:lxd:6.0
  • Canonical » Lxd » Version: 6.1
    cpe:2.3:a:canonical:lxd:6.1
  • Canonical » Lxd » Version: 6.2
    cpe:2.3:a:canonical:lxd:6.2
  • Canonical » Lxd » Version: 6.3
    cpe:2.3:a:canonical:lxd:6.3
  • Canonical » Lxd » Version: 6.4
    cpe:2.3:a:canonical:lxd:6.4
  • Canonical » Lxd » Version: 6.5
    cpe:2.3:a:canonical:lxd:6.5


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