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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

Quick assessment

Affected
lxc incus
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Incus 7.0.0（7.0.2 之前版本）和 7.1.0（7.5.0 之前版本）中存在一个路径遍历漏洞，允许能够创建实例的客户端在宿主机上写入文件。该漏洞源于实例备份的 文件中未对依赖的自定义卷名称进行验证。攻击者可以导入一个精心构造的实例备份，在依赖卷名称中利用 序列，从而创建由 root 拥有且内容可控的目录，最终导致整个宿主机被完全控制。

CVSS 9.9 · Critical

Affected Version Matrix 4

VendorProduct Version RangeStatus
lxc incus 7.0.0< 7.0.2 affected
7.0.2 unaffected
7.1.0< 7.5.0 affected
7.5.0 unaffected
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I. Basic Information for CVE-2026-115375

Vulnerability Information
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Vulnerability Title
Incus 7.0.0 before 7.0.2 and 7.1.0 before 7.5.0 Path Traversal via Instance Backup Dependent Volumes
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
对路径名的限制不恰当(路径遍历)
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
lxc incus 7.0.0 ~ 7.0.2 -

II. Public POCs for CVE-2026-115375

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III. Intelligence Information for CVE-2026-115375

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Other References for CVE-2026-115375 (2)

Same Patch Batch · lxc · 2026-10-22 · 9 CVEs total

CVE-2026-115377 9.9 CRITICAL Incus before 6.0.7, 6.1.0 before 7.0.2, and 7.1.0 before 7.5.0 Arbitrary File Write via Sy
CVE-2026-115372 8.5 HIGH Incus 7.3.0 before 7.5.0 Project Restriction Bypass via block.create_options
CVE-2026-115376 7.7 HIGH Incus 7.0.1 before 7.0.2 and 7.2.0 before 7.5.0 Project Restriction Bypass via Custom Volu
CVE-2026-115374 7.1 HIGH Incus 7.0.0 before 7.0.2 and 7.1.0 before 7.5.0 Unsigned Header Bypass in Presigned S3 Upl
CVE-2026-115371 7.1 HIGH LXC Incus 6.0.3 before 6.0.7, 6.6.0 before 7.0.2, and 7.1.0 before 7.5.0 Bucket Credential
CVE-2026-115373 6.3 MEDIUM Incus before 6.0.7, 6.1.0 before 7.0.2, and 7.1.0 before 7.5.0 Authorization Bypass via GE
CVE-2026-115378 5.8 MEDIUM Incus before 6.0.7, 6.1.0 before 7.0.2, and 7.1.0 before 7.5.0 Arbitrary File Write via Re
CVE-2026-115370 4.3 MEDIUM Incus 6.0.5 before 6.0.7, 6.12.0 before 7.0.2, and 7.1.0 before 7.5.0 Restricted Project B

IV. Related Vulnerabilities

Same product: incus
Same vendor: lxc
Same weakness: CWE-22

V. Comments for CVE-2026-115375

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