CVE-2026-62941 (GCVE-0-2026-62941)

Vulnerability from cvelistv5 – Published: 2026-08-21 14:47 – Updated: 2026-08-21 16:44
VLAI
Title
Incus: Cross-project instance copy bypasses target project restrictions via TOCTOU in config merge
Summary
Incus is a system container and virtual machine manager. Prior to version 7.3.0, when copying an instance across projects, the project restriction check (`AllowInstanceCreation`) runs BEFORE the source instance's configuration is merged into the request. Dangerous configuration keys (including `security.privileged`, `raw.lxc`, `raw.apparmor`) from the source instance are merged AFTER the check passes, bypassing all project restrictions on the target project. Version 7.3.0 patches the issue.
Severity
9.9 (Critical)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
SSVC
Exploitation: poc Automatable: no Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-21 16:42 UTC
CWE
  • CWE-863 - Incorrect Authorization
Assigner
GitHub_M CNA under the mitre root
CNA scorecard C 72/100 over 7799 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
lxc incus Affected: < 7.3.0
guessed Create a notification for this product.
Show details on NVD website
To clipboard 

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