Restricted project bypass in Incus via clustered migration refresh
Key facts
- Attack vector
- Network
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Attack requirements
- None
- Impact type
- Security bypass
- Confidentiality · integrity · availability
- Low · None · None
- Fix status
- Fixed
Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-863.
Summary
Incus from 6.0.5 before 6.0.7, from 6.12.0 before 7.0.2, and from 7.1.0 before 7.5.0 contains an incorrect authorization flaw (CWE-863) that lets restricted project users use pull mode migration through clustered refresh requests. An attacker with instance creation rights can send a refresh migration request for an existing instance, making the server open outbound TLS websocket connections that probe reachable services. The CVSS 4.0 vector indicates network access with low privileges required.
Written with Claude Haiku 5.5 from the sources below · 2026-11-03
Description from the CNA
Incus 6.0.5 before 6.0.7, 6.12.0 before 7.0.2, and 7.1.0 before 7.5.0 contains a restriction bypass vulnerability that allows restricted project users to use pull mode migration via clustered refresh requests. Attackers with instance creation rights can send a refresh migration request for an existing instance to make the server open outbound TLS websocket connections and probe reachable services.
Why it matters now
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 | 6.0.5 to before 6.0.7; 6.12.0 to before 7.0.2; 7.1.0 to before 7.5.0 | 6.0.7, 7.0.2, 7.5.0 | Patch available | CNA |
- incus Vendorlxc Affected 6.0.5 to before 6.0.7; 6.12.0 to before 7.0.2; 7.1.0 to before 7.5.0 Fixed in 6.0.7, 7.0.2, 7.5.0 Patch available CNA
Remediation
Upgrade Incus to fixed version 6.0.7, 7.0.2 or 7.5.0.
Written with Claude Haiku 5.5 from the sources below · 2026-11-03
- Fix · CNA incus (lxc) Fixed in 6.0.7, 7.0.2, 7.5.0
Fixed in the same release
Records fixed by the same vendor advisory or release, as the CNA lists them.
- Release ·
lxc incus 6.0.7, 7.0.2, 7.5.0
5 records Highest priority Priority MEDIUM 2 MEDIUM, 3 LOW
Other records, highest priority first
- TI-2026-79458 Missing authorization in Incus exposes operations across projectsPriority MEDIUM 64
- TI-2026-79462 Arbitrary file write via symlink in Incus migration streamPriority MEDIUM 43
- TI-2026-79456 Improper authorization in LXC Incus exposes storage bucket credentialsPriority LOW 31
Vendor assessments
Timeline
- 2026-10-22 Threatist record created from CVE-2026-115370
- 2026-10-22 Alias added: GHSA-7vwr-wj2h-fm66
- 2026-10-23 CISA SSVC decision points changed
- 2026-11-03 Affected versions changed · Red Hat
- 2026-11-03 CVSS score added · Red Hat
References
More lxc vulnerabilities
- 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
Sources
- CVE-2026-115370 · CVE Program
- CVE-2026-115370 · NVD
- FIRST EPSS
- GHSA-7vwr-wj2h-fm66 · GitHub Advisory Database · CC BY 4.0
- CVE-2026-115370 · Red Hat security data · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences