Input validation error in LXD - CVE-2026-48752
Published: June 29, 2026
Vulnerability identifier: #VU135801
CSH Severity: Medium
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2026-48752
CWE-ID: CWE-20
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: Linux Containers
Affected software:
LXD
LXD
Detailed vulnerability description
The vulnerability allows a remote user to read and write arbitrary files on the host.
The vulnerability exists due to improper input validation in the image tar extraction logic when processing a specially crafted container image containing a top-level templates symlink. A remote user can import a specially crafted image to read and write arbitrary files on the host.
This issue may also lead to arbitrary command execution on the host.
How to mitigate CVE-2026-48752
Install security update from vendor's website.