CVE-2026-62420

Last refreshed2026-10-23

Status: UPDATED | Advisory ID: CVE-2026-62420

Key Details

CVE	CVE-2026-62420
CVSS Score / Version	9.9 (Critical) / CVSS v3.1
Updated	2026-10-23
CVSS Vector	`CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H`
CVSS Prose	attack vector is network; attack complexity is low; privileges required is low; user interaction is none; scope is changed; confidentiality impact is high; integrity impact is high; availability impact is high.
Affected products	canonical lxd
Classified as	CWE-863 (Incorrect Authorization)

Affected Products, Subsystems & Sectors

Vendor	Product	Affected Versions	Patch Status
canonical	lxd

Vendor

Product

Affected Versions

Patch Status

canonical

lxd

Subsystems	General OT
Sectors	Multiple

What to Know

An authorization bypass vulnerability in LXD allows an authenticated attacker to bypass target project security restrictions during cross-project instance migrations. When moving an instance cross-project to a different cluster member via POST /1.0/instances/{name} with migration: true, project: <target>, and target: <member>, the destination node skips all project restriction checks because the request arrives as an internal cluster notification. An attacker can exploit this to introduce disallowed instance configurations into a restricted project. (NVD)

What to Do

Monitor canonical's web page for any future patch releases. See vendor advisory link below.

References

Source	Reference
NVD	https://nvd.nist.gov/vuln/detail/CVE-2026-62420
CVE	https://www.cve.org/CVERecord?id=CVE-2026-62420
Vendor advisory	https://github.com/canonical/lxd/security/advisories/GHSA-v9wr-9r7q-fh4g

Source

Reference

NVD

https://nvd.nist.gov/vuln/detail/CVE-2026-62420

CVE

https://www.cve.org/CVERecord?id=CVE-2026-62420

Vendor advisory

https://github.com/canonical/lxd/security/advisories/GHSA-v9wr-9r7q-fh4g