Project restriction bypass via instance migration config override (Canonical LXD)

CVE-2026-63296
CRITICAL 9.9

At a glance

Source
NVD
EPSS
EPSS 0.44 % Β· percentile 39 ()
State
PUBLISHED
Published
Updated
Assigner
canonical
NVD status
Analyzed

Description

An authorization bypass vulnerability in LXD allows an authenticated attacker to bypass target project restrictions during instance migration. When migrating an instance to a target project, LXD accepts configuration overrides without validating the new configuration against the target project's enforced restrictions. An attacker can exploit this flaw to move instances with disallowed high-privilege configurations into restricted projects, bypassing security controls.

Weaknesses (CWE)

  • CWE-863 β€” Incorrect Authorization

References

Scores

VersionScoreVectorScored by
CVSS 3.1CRITICAL 9.9CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:Hcanonical
CVSS 3.1CRITICAL 9.9CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:HNVD Β· security@ubuntu.com (Secondary)

European references

Affected configurations (NVD CPE)

Affected products

ProductVersions
Canonical Β· LXDaffected 5.0.0 < 5.0.8 ; affected 5.21.0 < 5.21.6 ; affected 6.0 < 6.10

Sources

SourceLicence
CVE List (CVEProject cvelistV5)CVE Program Terms of Use
EPSS (FIRST.org)FIRST β€” attribution requested
ENISA EUVDENISA β€” reproduction authorised, source acknowledged
NVD (NIST) via fkie-cad/nvd-json-data-feedsPublic domain β€” this product uses data from the NVD API but is not endorsed or certified by the NVD