CVE-2025-54287: lxd — Exploit & Fix

Description

Template Injection in instance snapshot creation component in Canonical LXD (>= 4.0) allows an attacker with instance configuration permissions to read arbitrary files on the host system via specially crafted snapshot pattern templates using the Pongo2 template engine.

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CVSS v3.1 Score

6.5

MEDIUM

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

Weakness Type (CWE)

CWE-1336 CWE-1336

Affected Products

Vendor	Product	Versions
canonical	lxd	4.0.0 — 5.21.4
canonical	lxd	6.1 — 6.5
linux	linux_kernel	All

References

Advisories & Patches

https://github.com/canonical/lxd/security/advisories/GHSA-w2hg-2v4p-vmh6 https://github.com/canonical/lxd/security/advisories/GHSA-w2hg-2v4p-vmh6

Exploits

https://github.com/canonical/lxd/security/advisories/GHSA-w2hg-2v4p-vmh6 https://github.com/canonical/lxd/security/advisories/GHSA-w2hg-2v4p-vmh6

Frequently Asked Questions

What is CVE-2025-54287? +

Template Injection in instance snapshot creation component in Canonical LXD (>= 4.0) allows an attacker with instance configuration permissions to read arbitrary files on the host system via specially crafted snapshot pattern templates using the Pongo2 template engine. It has a CVSS v3.1 base score of 6.5 (MEDIUM).

How severe is CVE-2025-54287? +

CVE-2025-54287 has a CVSS v3.1 score of 6.5 out of 10, rated MEDIUM. This is a medium-severity vulnerability that should be remediated as part of regular maintenance.

What products are affected by CVE-2025-54287? +

CVE-2025-54287 affects products from canonical, linux, specifically: linux_kernel, lxd. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2025-54287? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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