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TI-2026-79460 Aliases CVE-2026-115375GHSA-f963-f2v2-v6x5

Path traversal in Incus lets clients write files on the host

Priority MEDIUM 43CWE-22Published · Updated

Key facts

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

Attack profile from CVSS 4.0 · CNA. Fix status from CNA.

Summary

Incus from 7.0.0 before 7.0.2 and from 7.1.0 before 7.5.0 contains a path traversal flaw (CWE-22) in instance backup handling. The dependent custom volume names in instance backup index.yaml files are not validated, so a client that can create instances can import a crafted backup containing ../ sequences and write files on the host. An attacker can create root-owned directories with controlled content, which can lead to full host compromise. The CVSS 4.0 vector requires low privileges and no user interaction.

Written with Claude Haiku 5.5 from the sources below · 2026-11-03

Description from the CNA

Incus 7.0.0 before 7.0.2 and 7.1.0 before 7.5.0 contains a path traversal vulnerability that allows clients able to create instances to write files on the host. The flaw stems from unvalidated dependent custom volume names in instance backup index.yaml files. Attackers can import a crafted instance backup with ../ sequences in dependent volume names to create root-owned directories with controlled content, leading to full host compromise.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00405 35th percentileScored 2026-11-07
Fix Fixed incus (lxc): 7.0.2, 7.5.0

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Total

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

Affected products

VendorProductAffected versionsFixed inStatusSource
lxcincus7.0.0 to before 7.0.2; 7.1.0 to before 7.5.07.0.2, 7.5.0Patch availableCNA
  • incus Vendorlxc Affected 7.0.0 to before 7.0.2; 7.1.0 to before 7.5.0 Fixed in 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 version 7.0.2 or 7.5.0. The sources list no fixed version for Red Hat's product, which Red Hat marks as not affected.

Written with Claude Haiku 5.5 from the sources below · 2026-11-03

  • Fix · CNA incus (lxc) Fixed in 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 7.0.2, 7.5.0

    3 records Highest priority Priority MEDIUM 1 MEDIUM, 2 LOW

    Other records, highest priority first

    • TI-2026-79461 Incus lets restricted clients copy volumes from other projectsPriority LOW 36
    • TI-2026-79459 Signature bypass in Incus S3 presigned uploads exposes other objectsPriority LOW 30
    Show all 3 records →

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-2026-115375
  2. 2026-10-22 Alias added: GHSA-f963-f2v2-v6x5
  3. 2026-11-03 Affected versions changed · Red Hat
  4. 2026-11-03 CVSS score added · Red Hat
  5. 2026-11-05 CISA SSVC decision points changed

References

Advisory 1

  • 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