9.9
CRITICAL CVSS 3.1
CVE-2026-62420
Cross-project cluster migration bypasses project restrictions via cluster notification flag
Description

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.

INFO

Published Date :

Aug. 12, 2026, 7:12 p.m.

Last Modified :

Aug. 12, 2026, 7:12 p.m.

Remotely Exploit :

Yes !

Source :

canonical
Affected Products

The following products are affected by CVE-2026-62420 vulnerability. Even if cvefeed.io is aware of the exact versions of the products that are affected, the information is not represented in the table below.

ID Vendor Product Action
1 Canonical lxd
CVSS Scores
The Common Vulnerability Scoring System is a standardized framework for assessing the severity of vulnerabilities in software and systems. We collect and displays CVSS scores from various sources for each CVE.
Score Version Severity Vector Exploitability Score Impact Score Source
CVSS 3.1 CRITICAL cc1ad9ee-3454-478d-9317-d3e869d708bc
Solution
Update LXD to patch the authorization bypass vulnerability in instance migrations.
  • Update LXD to the latest version.
  • Apply security patches for LXD.
  • Review LXD cluster communication security.
  • Test instance migration security controls.

We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).

Results are limited to the first 15 repositories due to potential performance issues.

The following list is the news that have been mention CVE-2026-62420 vulnerability anywhere in the article.

EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.