Description
A link following vulnerability in LXD allows an attacker to achieve arbitrary file read and write operations on the host system. When importing or unpacking an image archive, LXD fails to validate whether the metadata.yaml file is a symbolic link. An attacker can exploit this flaw by providing a crafted image archive with a symlinked metadata.yaml file pointing to target file paths on the host system.
Published: 2026-08-12
Score: 9.9 Critical
EPSS: n/a
KEV: No
Impact: n/a
Action: n/a
AI Analysis

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Remediation

Vendor Solution

Upgrade to LXD version 4.0.12 or later, 5.0.8 or later, or 5.12.6 or later, or 6.10 or later.

Tracking

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Advisories

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History

Wed, 12 Aug 2026 20:15:00 +0000

Type Values Removed Values Added
Description A link following vulnerability in LXD allows an attacker to achieve arbitrary file read and write operations on the host system. When importing or unpacking an image archive, LXD fails to validate whether the metadata.yaml file is a symbolic link. An attacker can exploit this flaw by providing a crafted image archive with a symlinked metadata.yaml file pointing to target file paths on the host system.
Title Arbitrary File Read/Write: metadata.yaml symlink in image allows host filesystem access as root
Weaknesses CWE-59
References
Metrics cvssV3_1

{'score': 9.9, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H'}

Subscriptions

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cve-icon MITRE

Status: PUBLISHED

Assigner: canonical

Published:

Updated: 2026-08-12T20:00:09.214Z

Reserved: 2026-07-16T09:49:29.911Z

Link: CVE-2026-63293

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-08-12T20:17:47.060

Modified: 2026-08-12T20:17:47.060

Link: CVE-2026-63293

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.

Weaknesses
  • CWE-59

    Improper Link Resolution Before File Access ('Link Following')