TI-2026-40150 Aliases CVE-2026-55621 GHSA-64f3-v33m-w89f

Incus has a project restriction bypass for custom volume copy across projects

LOW 34CWE-284Published 2026-08-21 · Updated 2026-11-05

Key facts

Attack vector: Network
Privileges required: Low
User interaction: None
Attack complexity: Low
Impact type: Security bypass
Confidentiality · integrity · availability: High · None · None
Fix status: Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA and GitHub. Impact type from CWE-284.

Summary

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.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV

EPSS 0.00415 36th percentileScored 2026-11-07

Fix Fixed incus (lxc): 7.2.0lxd (canonical): 5.0.7, 6.8.0+1 more product

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: None
Automatable: No
Technical impact: Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
lxc	incus	before 7.2.0	7.2.0	Patch available	CNA
Canonical	lxd	4.12.0 to before 5.0.7; >= 5.1.0, 5.21.5; 6.0.0 to before 6.8.0	5.0.7, 6.8.0	Patch available	CNA
—	github.com/lxc/incus/v7 (Go)	before 7.2.0	7.2.0	Patch available	GHSA-64f3-v33m-w89f
—	github.com/lxc/incus/v6 (Go)	up to 6.23.0	—	No fix listed	GHSA-64f3-v33m-w89f
—	github.com/lxc/incus (Go)	up to 0.7.0	—	No fix listed	GHSA-64f3-v33m-w89f

incus Vendorlxc Affected before 7.2.0 Fixed in 7.2.0 Patch available CNA
lxd VendorCanonical Affected 4.12.0 to before 5.0.7; >= 5.1.0, 5.21.5; 6.0.0 to before 6.8.0 Fixed in 5.0.7, 6.8.0 Patch available CNA
github.com/lxc/incus/v7 (Go) Vendor— Affected before 7.2.0 Fixed in 7.2.0 Patch available GHSA-64f3-v33m-w89f
github.com/lxc/incus/v6 (Go) Vendor— Affected up to 6.23.0 Fixed in — No fix listed GHSA-64f3-v33m-w89f
github.com/lxc/incus (Go) Vendor— Affected up to 0.7.0 Fixed in — No fix listed GHSA-64f3-v33m-w89f

CPE names Threatist (inferred) · 2

Inferred from how NVD named this product before; not given by a source.

CPE	Versions	Role	Vendor
cpe:2.3:a:linuxcontainers:incus::::::::	—	—	lxc
cpe:2.3:a:canonical:lxd::::::::	—	—	Canonical

cpe:2.3:a:linuxcontainers:incus:*:*:*:*:*:*:*:* Versions — — ·lxc
cpe:2.3:a:canonical:lxd:*:*:*:*:*:*:*:* Versions — — ·Canonical

Remediation

Fix · CNA incus (lxc) Fixed in 7.2.0
Fix · CNA lxd (canonical) Fixed in 5.0.7, 6.8.0
Fix · GHSA-64f3-v33m-w89f github.com/lxc/incus/v7 (Go) Fixed in 7.2.0 Advisory →

Timeline

2026-10-02 Threatist record created from CVE-2026-55621
2026-10-03 Alias added: GHSA-64f3-v33m-w89f
2026-11-05 3 new references · CNA
2026-11-05 1 new reference · GHSA-64f3-v33m-w89f
2026-11-06 Affected versions changed · CNA

References

Advisory 1

https://nvd.nist.gov/vuln/detail/CVE-2026-55621

Other 5

TI-2019-04061 runc through 1.0-rc6, as used in Docker before 18.09.2 and other products, allows… CVSS 3.1HIGH 8.6
TI-2026-45063 Incus vulnerable to root RCE via image backup.yaml symlink CVSS 3.1CRITICAL 9.9
TI-2026-44978 Incus: Cross-project instance copy bypasses target project restrictions via TOCTOU in config merge CVSS 3.1CRITICAL 9.9
TI-2026-36039 Incus has an arbitrary file write on its client due to trusted image hash CVSS 3.1CRITICAL 9.9
TI-2026-36024 Incus has an arbitrary file write via path traversal in S3 multipart upload CVSS 3.1CRITICAL 9.9
TI-2026-36022 Incus has a restricted project bypass leading to arbitrary command execution CVSS 3.1CRITICAL 9.9

See all 63 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences