Description
Improper link resolution in the recursive file pull feature of the LXD CLI client in Canonical LXD versions 4.0.2 up to 6.9 (fixed in 4.0.14, 5.0.10 and 5.21.8) on Linux allows an attacker with root access inside a virtual machine to write attacker-controlled files or directory trees to arbitrary paths on the client host, with the operator's privileges. The attacker does this by using a modified lxd-agent that returns inconsistent SFTP directory listings and Lstat results.
Published: 2026-09-28
Score: 5.8 Medium
EPSS: n/a
KEV: No
Impact: n/a
Action: n/a
AI Analysis

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Remediation

Vendor Solution

Upgrade to LXD versions 4.0.14, 5.0.10, 5.21.8 or later.

Tracking

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Advisories

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History

Mon, 28 Sep 2026 17:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Mon, 28 Sep 2026 15:15:00 +0000

Type Values Removed Values Added
First Time appeared Canonical
Canonical lxd
Vendors & Products Canonical
Canonical lxd

Mon, 28 Sep 2026 13:30:00 +0000

Type Values Removed Values Added
Description Improper link resolution in the recursive file pull feature of the LXD CLI client in Canonical LXD versions 4.0.2 up to 6.9 (fixed in 4.0.14, 5.0.10 and 5.21.8) on Linux allows an attacker with root access inside a virtual machine to write attacker-controlled files or directory trees to arbitrary paths on the client host, with the operator's privileges. The attacker does this by using a modified lxd-agent that returns inconsistent SFTP directory listings and Lstat results.
Title LXD client recursive file pull allows directory escape via malicious VM agent
Weaknesses CWE-59
References
Metrics cvssV3_1

{'score': 5.8, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:N/I:H/A:N'}


cve-icon MITRE

Status: PUBLISHED

Assigner: canonical

Published:

Updated: 2026-09-28T16:32:28.148Z

Reserved: 2026-09-09T10:00:46.383Z

Link: CVE-2026-87798

cve-icon Vulnrichment

Updated: 2026-09-28T16:22:28.362Z

cve-icon NVD

Status : Deferred

Published: 2026-09-28T14:17:21.290

Modified: 2026-09-28T17:17:51.673

Link: CVE-2026-87798

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-09-28T15:30:02Z

Weaknesses