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CVE-2026-97335— Incorrect authorization in LXD storage volume API allows reading volumes from other projects

Quick assessment

Affected
Canonical LXD
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.

Canonical LXD 在 Linux 上的 5.0.0 及后续版本中，自定义存储卷创建端点存在授权错误（已在 5.0.10、5.21.8 和 6.10 版本中修复）。该漏洞允许拥有在某个项目中创建自定义存储卷权限的已认证客户端，通过发送一个精心构造的请求——其中设置了源存储卷（source volume）和源项目（source.project），但故意省略了源类型（source.type）参数——从而复制并读取服务器上其他任何项目中的自定义存储卷，包括其快照和配置信息。

CVSS 7.7 · High
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I. Basic Information for CVE-2026-97335

Vulnerability Information
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Vulnerability Title
Incorrect authorization in LXD storage volume API allows reading volumes from other projects
Source: CVE Program / CVE List V5
Vulnerability Description
Incorrect authorization in the custom storage volume creation endpoint in Canonical LXD versions 5.0.0 and later (fixed in 5.0.10, 5.21.8 and 6.10) on Linux allows an authenticated client with permission to create custom volumes in a project to copy, and so read, any custom storage volume from any other project on the server, including its snapshots and configuration. The client does this with a crafted request that sets a source volume and source.project but omits source.type.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
授权机制不正确
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
Canonical LXD 5.0.0 ~ 5.0.10 -

II. Public POCs for CVE-2026-97335

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III. Intelligence Information for CVE-2026-97335

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Other References for CVE-2026-97335 (1)

Same Patch Batch · Canonical · 2026-09-28 · 7 CVEs total

CVE-2026-87799 9.9 CRITICAL Arbitrary file write on LXD host via symlink in migration stream
CVE-2026-85526 9.9 CRITICAL Path traversal via Btrfs optimized-backup subvolumes[].path enables root file/dir manipula
CVE-2026-85185 9.6 CRITICAL Path traversal in LXD btrfs storage driver allows arbitrary file deletion and write on hos
CVE-2026-86335 6.3 MEDIUM LXD Cross-Project Private Image Theft via Unsanitized GetImageFromAnyProject Local Reuse
CVE-2026-87798 5.8 MEDIUM LXD client recursive file pull allows directory escape via malicious VM agent
CVE-2026-86334 4.2 MEDIUM CLI Path Traversal via Content-Disposition in LXD Image Export/Copy

IV. Related Vulnerabilities

Same product: LXD
Same vendor: Canonical
Same weakness: CWE-863

V. Comments for CVE-2026-97335

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