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Vulnerabilities CVE-2026-63296

CVE-2026-63296

Critical
Open
TLP:CLEAR

Project restriction bypass via instance migration config override

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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.

Details

CVSS Score
9.9
EPSS Score
0.25%

16th percentile

CVSS Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
Confidence
90%
Published
Aug 12, 2026
Last Modified
Aug 13, 2026
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