Incus is a system container and virtual machine manager. Prior to version 7.2.0, missing authorization checks exist for custom volume copying where an attacker knowing the name of a project that they don't have access to and the name of a custom volume in that project can copy the custom volume to a new project. This issue could allow an attacker to access secrets in custom volumes they are not authorized to access. Version 7.2.0 patches the issue.

CVE-2026-55621 affects Incus, a system container and virtual machine manager, in versions prior to 7.2.0. The vulnerability involves missing authorization checks during custom volume copying operations. An attacker who knows the name of a project and a custom volume within that project can copy the volume to a different project without proper authorization. This flaw could allow unauthorized access to sensitive secrets stored in custom volumes. The attack requires knowledge of valid project and volume names but does not require authenticated access to those resources. The issue has been patched in Incus version 7.2.0. Users are advised to upgrade immediately to mitigate the risk of unauthorized data access.