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CVE-2026-63295

4.3 medium SSVC exploitation: poc Analyzed
NVD · CVE.org

An authorization bypass vulnerability in LXD allows an authenticated attacker to bypass project-level container isolation restrictions. When a project is configured with restrictions on container privileges (such as enforcing restricted.containers.privilege=isolated), LXD fails to enforce the requirement if an instance configuration omits the security.idmap.isolated key. An attacker can exploit this flaw by creating or updating an instance without explicitly setting security.idmap.isolated, bypassing the target project's security constraints.

Fix

Patch, vendor advisory and mitigation references on NVD 2

Every line above is quoted from NVD, CISA, Microsoft, the vendor's own advisory or DISA; nothing is generated.

Change history 1

  1. First seenCVSS 4.3 · canonicalNVD modified 2026-10-23 19:10

Affected (CPE criteria) 1

  • cpe:2.3:a:canonical:lxd:*:*:*:*:*:*:*:*

References 2