CVE-2026-62941
published 2026-08-21CVE-2026-62941: 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…
PriorityP260critical9.9CVSS 3.1
AVNACLPRLUINSCCHIHAH
EPSS
0.25%
15.8th percentile
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.
Affected
1 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| lxc | incus | < 7.3.0 | 7.3.0 |
CVSS provenance
nvdv3.19.9CRITICALCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
vendor_redhat9.9CRITICAL
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Bugzilla
CVE-2026-62941 incus: Incus: Cross-project instance copy bypasses target project restrictions via TOCTOU in config merge [fedora-all]
bugzilla·2026-08-26·CVSS 9.9
CVE-2026-62941 [CRITICAL] CVE-2026-62941 incus: Incus: Cross-project instance copy bypasses target project restrictions via TOCTOU in config merge [fedora-all]
CVE-2026-62941 incus: Incus: Cross-project instance copy bypasses target project restrictions via TOCTOU in config merge [fedora-all]
Disclaimer: Community trackers are created by Red Hat Product Security team on a best effort basis. Package maintainers are required to ascertain if the flaw indeed affects their package, before starting the update process.
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
Bugzilla
CVE-2026-62941 incus: Incus: Cross-project instance copy bypasses target project restrictions via TOCTOU in config merge
bugzilla·2026-08-21·CVSS 9.9
CVE-2026-62941 [CRITICAL] CVE-2026-62941 incus: Incus: Cross-project instance copy bypasses target project restrictions via TOCTOU in config merge
CVE-2026-62941 incus: Incus: Cross-project instance copy bypasses target project restrictions via TOCTOU in config merge
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.
2026-08-21
Published