CVE-2025-54289 Privilege Escalation via WebSocket Connection Hijacking in LXD Operations API

What is CVE-2025-54289?

CVE-2025-54289 is a high-severity vulnerability in Canonical LXD, published on 2 Oct 2025. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.

Official description

Privilege Escalation in operations API in Canonical LXD <6.5 on multiple platforms allows attacker with read permissions to hijack terminal or console sessions and execute arbitrary commands via WebSocket connection hijacking format

Weakness: CWE-1385

Which versions are affected by CVE-2025-54289?

7 open source packages ship an affected version, including github.com/canonical/lxd. It affects 1 product.

Products include Canonical Lxd.

How do I fix CVE-2025-54289?

Upgrade github.com/canonical/lxd to a fixed version for your release line: 0.0.0-20250827065555-0494f5d47e41, 5.21.4 or 6.5.

Is CVE-2025-54289 being exploited?

There is no known exploitation of CVE-2025-54289 in the wild and no public exploit code.

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-2025-54289, GHSA-3g72-chj4-2228, GO-2025-3999, UBUNTU-CVE-2025-54289.