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Restricted project bypass in Incus via clustered migration refresh

Priority LOW 24CWE-863Published · Updated

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

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00365 30th percentileScored 2026-11-07
Fix Fixed incus (lxc): 6.0.7, 7.0.2, 7.5.0

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

VendorProductAffected versionsFixed inStatusSource
lxcincus6.0.5 to before 6.0.7; 6.12.0 to before 7.0.2; 7.1.0 to before 7.5.06.0.7, 7.0.2, 7.5.0Patch availableCNA
  • 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

CPE names Threatist (inferred) · 1

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

CPEVersionsRoleVendor
cpe:2.3:a:linuxcontainers:incus:*:*:*:*:*:*:*:*——lxc
  • cpe:2.3:a:linuxcontainers:incus:*:*:*:*:*:*:*:* Versions — — ·lxc

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

Red Hat

Red Hat's page for this CVE →

Not affected: 1 product
  • Red Hat

Timeline

  1. 2026-10-22 Threatist record created from CVE-2026-115370
  2. 2026-10-22 Alias added: GHSA-7vwr-wj2h-fm66
  3. 2026-10-23 CISA SSVC decision points changed
  4. 2026-11-03 Affected versions changed · Red Hat
  5. 2026-11-03 CVSS score added · Red Hat

References

  • 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