CVE-2026-63299

Last refreshed2026-10-23

Status: UPDATED | Advisory ID: CVE-2026-63299

Key Details

CVE	CVE-2026-63299
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-770 (Allocation of Resources Without Limits or Throttling)

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 user to bypass project-level disk and volume limits. Two related code paths fail to verify resource limits during volume operations: the storagePoolVolumeTypePostMove function omits the limits.AllowVolumeCreation check before moving a volume across projects, and volume snapshot restore operations skip the AllowVolumeUpdate check when the configuration is nil (Config == nil). An attacker can exploit these flaws to allocate storage resources that exceed the administrative limits configured for a 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-2026-63299
CVE	https://www.cve.org/CVERecord?id=CVE-2026-63299
Vendor advisory	https://github.com/canonical/lxd/security/advisories/GHSA-5h78-p252-989h

Source

Reference

NVD

https://nvd.nist.gov/vuln/detail/CVE-2026-63299

CVE

https://www.cve.org/CVERecord?id=CVE-2026-63299

Vendor advisory

https://github.com/canonical/lxd/security/advisories/GHSA-5h78-p252-989h