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8.5 High

CVE-2026-63299 An authorization bypass vulnerability in LXD allows an authenticated user to bypass project-level disk and volume limits

Description

An authorization bypass vulnerability in LXD allows an authenticated user to bypass project-level disk and volume limits. Two related code paths fail to verify resource limits during volume operations: the storagePoolVolumeTypePostMove function omits the limits.AllowVolumeCreation check before moving a volume across projects, and volume snapshot restore operations skip the AllowVolumeUpdate check when the configuration is nil (Config == nil). An attacker can exploit these flaws to allocate storage resources that exceed the administrative limits configured for a project.

Affected products and versions

Product Affected versions Fixed in
LXD 6.0 6.0 → < 6.10 6.10
LXD 5.21 5.21.0 → < 5.21.6 5.21.6
LXD 5.0 5.0.0 → < 5.0.8 5.0.8

References

Timeline

  1. Published
  2. Last modified

Other CVEs of LXD

The 47 CVEs of LXD →
CVE-2026-112816 Improper certificate validation in the HTTPS listener in Canonical LXD 4.0.14, 5.0.10, 5.21.8, 6.9 before 4.0.15,… 10.0 Critical CVE-2026-87798 Improper link resolution in the recursive file pull feature of the LXD CLI client in Canonical LXD versions 4.0.2 up… 5.8 Medium CVE-2026-87799 Improper link resolution in the migration receive path in Canonical LXD versions 4.0 and later (fixed in 4.0.14, 5.0.10,… 9.9 Critical CVE-2026-97335 Incorrect authorization in the custom storage volume creation endpoint in Canonical LXD versions 5.0.0 and later… 7.7 High
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