CVE-2026-63296 json
Project restriction bypass via instance migration config override
published 2026-08-12 2 mo ago modified 2026-10-24 15 d ago also EUVD-2026-57515
- cvss
- 9.9
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.4%
- EPSS 0.4% chance of exploitation in 30 days, percentile 38%
- public exploits
- 0
- none known
Summary
An authorization bypass vulnerability in LXD allows an authenticated attacker to bypass target project restrictions during instance migration. When migrating an instance to a target project, LXD accepts configuration overrides without validating the new configuration against the target project's enforced restrictions. An attacker can exploit this flaw to move instances with disallowed high-privilege configurations into restricted projects, bypassing security controls.
Patch / fix
- Canonical LXD 5.0.8, 5.21.6, 6.10
- lxd openSUSE Leap 16.0 5.21.6-bp160.1.1
opensuse advisories openSUSE-SU-2026:21788-1
CISA SSVC
- Exploitation
- Proof of concept is public
- Automatable
- no
- Technical impact
- total
- Assessed
- 2 mo ago
Exploit prediction
0.44% chance of exploitation in the next 30 days, higher than 38% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- github.com https://github.com/canonical/lxd/security/advisories/GHSA-gcr9-5q6r-w625 referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 9.9 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H |
Affected products
- Canonical LXD
Classification
- Weakness
-
- CWE-863 Incorrect Authorization
References
-
github.com
/canonical/lxd/security/advisories/GHSA-gcr9-5q6r-w625
vdb-entry, vendor-advisory, exploit, mitigation
Sources
- CVE List CVE-2026-63296
- NVD CVE-2026-63296
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.