by Kastro
Paper/Archive/CVE-2026-115375

CVE-2026-115375

lxc incus — Incus 7.0.0 before 7.0.2 and 7.1.0 before 7.5.0 Path Traversal via Instance Backup Dependent Volumes

EPSS 0.4%CVSS 9.9
critical.is priorityof 100
37
CVSS 9.9 (CNA)9.9 / 10 × 3029.7Not in CISA KEV+300.0EPSS percentile 34.7.347 × 206.9No public exploit+100.0SSVC exploitation: unknown+100.0
Description · from the CVE record

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.

Affected

ProductAffectedFixed inSource
incus7.0.0 – < 7.0.27.0.2CNA
incus7.1.0 – < 7.5.07.5.0CNA

Scores by source

VulnCheck (CNA)9.9CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
VulnCheck (CNA)9.4CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H

References

advisorygithub.com/lxc/incus/security/advisories/GHSA-hpjh-q53p-f27rwriteupvulncheck.com/advisories/incus-7.0.0-before-7.0.2-and-7.1.0-before-7.5.0-path-traversal-via-instance-backup-dependent-volumes