Path Traversal in Lxc Incus
CVE-2026-115375
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.
Vulnerability class: Path Traversal (Directory Traversal)
Published .
CVSS v3 metric
CVSS v3 base score 9.9 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H.
EPSS exploit prediction
No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.
Affected products
Weakness classification (CWE)
References
- github.com/lxc/incus/security/advisories/GHSA-hpjh-q53p-f27r (vendor-advisory)
- www.vulncheck.com/advisories/incus-7.0.0-before-7.0.2-and-7.1.0-before-7.5.0-pa… (third-party-advisory)
Frequently asked questions
- What is CVE-2026-115375?
- CVE-2026-115375 is a critical-severity vulnerability in Lxc Incus, classified under Path Traversal. CVSS score: 9.9/10. Published 2026-10-22.
- How severe is CVE-2026-115375?
- Critical severity. CVSS v3 base score is 9.9 out of 10.