What is CVE-2026-9640?

CVE-2026-9640 is a high-severity vulnerability in Canonical Lxd, classified under Incorrect Authorization. CVSS score: 7.2/10. Published 2026-06-26.

How severe is CVE-2026-9640?

High severity. CVSS v3 base score is 7.2 out of 10.

Auth bypass in Canonical Lxd

CVE-2026-9640

A privilege escalation vulnerability exists in LXD from 6.0 before 6.9, 5.21.0 before 5.21.5, and 5.0.0 before 5.0.7 regarding the handling of project-restriction policies during snapshot restoration.. An authenticated project operator in…

Vulnerability class: Broken Access Control

CVSS v3 metric

CVSS v3 base score 7.2 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H.

Affected products

Canonical Lxd — versions 5.21.0, 5.0.0, 6.0

Weakness classification (CWE)

CWE-863 — Incorrect Authorization

References

security@ubuntu.com (vendor-advisory, vdb-entry)
security@ubuntu.com (patch)
security@ubuntu.com (patch)
security@ubuntu.com (patch)

Frequently asked questions

What is CVE-2026-9640?: CVE-2026-9640 is a high-severity vulnerability in Canonical Lxd, classified under Incorrect Authorization. CVSS score: 7.2/10. Published 2026-06-26.
How severe is CVE-2026-9640?: High severity. CVSS v3 base score is 7.2 out of 10.