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9.4 Critical

CVE-2026-115375 Incus 7.0.0 before 7.0.2 and 7.1.0 before 7.5.0 Path Traversal via Instance Backup Dependent Volumes

Description

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.

CVSS 4.0 detail

Vector CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H

Exploitable remotely over the network, with an ordinary account and without any user action; an attacker can seriously compromise confidentiality, integrity or availability.

Attack vector
Network
Attack complexity
Low
Attack requirements
None
Privileges required
Low
Interaction
None
Confidentiality
High
Integrity
High
Availability
High
Confidentiality of other systems
High
Integrity of other systems
High
Availability of other systems
High

Affected products and versions

Product Affected versions Fixed in
incus 7.5 earliest → < 7.5.0 7.5.0
incus 7.1 7.1.0 → < 7.5.0 7.5.0
incus 7.0 7.0.0 → < 7.0.2 7.0.2

References

Timeline

  1. Published
  2. Last modified

Other CVEs of incus

The 47 CVEs of incus →
CVE-2026-115378 Incus before 6.0.7, 6.1.0 before 7.0.2, and 7.1.0 before 7.5.0 contains an arbitrary file write vulnerability in… 6.9 Medium CVE-2026-115377 Incus before 6.0.7, 6.1.0 before 7.0.2, and 7.1.0 before 7.5.0 contains an arbitrary file write vulnerability that… 9.4 Critical CVE-2026-115376 Incus 7.0.1 before 7.0.2 and 7.2.0 before 7.5.0 contains an authorization bypass vulnerability that allows… 8.3 High CVE-2026-115374 Incus 7.0.0 before 7.0.2 and 7.1.0 before 7.5.0 contains a signature verification flaw in its built-in S3 server that… 7.1 High
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