CVE-2025-54287 Arbitrary File Read via Template Injection in Snapshot Patterns

What is CVE-2025-54287?

CVE-2025-54287 is a high-severity code injection vulnerability in Canonical LXD, published on 2 Oct 2025. Any signed-in user can exploit it over the network, with no action from the victim.

Official 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.

Weakness: CWE-1336

Which versions are affected by CVE-2025-54287?

8 open source packages ship an affected version, including github.com/lxc/lxd and github.com/lxc/lxd/v6. It affects 1 product.

Products include Canonical Lxd.

How do I fix CVE-2025-54287?

Upgrade github.com/lxc/lxd to a fixed version for your release line: 0.0.0-20250827065555-0494f5d47e41, 5.21.4 or 6.5.0.

Upgrade, and never evaluate templates, expressions or code built from user input. More about Code injection.

Is CVE-2025-54287 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-54287 exists.

Other vulnerabilities in Canonical LXD

• CVE-2026-66897 Instance template path traversal allows arbitrary host file write as root Critical 9.9
• CVE-2026-62420 Cross-project cluster migration bypasses project restrictions via cluster notification flag Critical 9.9
• CVE-2026-63293 Arbitrary File Read/Write: metadata.yaml symlink in image allows host filesystem access as root Critical 9.9
• CVE-2026-63294 Root RCE via image backup.yaml symlink Critical 9.9
• CVE-2026-63296 Project restriction bypass via instance migration config override Critical 9.9

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as DEBIAN-CVE-2025-54287, GHSA-w2hg-2v4p-vmh6, GO-2025-4004.