Reference page — cumulative record through Sunday, October 4, 2026 UTC. Reference pages update as the archive grows; only dated daily editions are immutable pages of record.

CVE-2026-63295

CVE-2026-63295MEDIUM

Canonical LXD — Project restriction `restricted.containers.privilege=isolated` bypassable by omitting `security.idmap.isolated`

  AV  AC  PR  UI  S  C  I  A   CVSS    EPSS   %ile   KEV
   N   L   L   N  U  N  N  L    4.3   .0035   26.2     —

AFFECTED
  Product  Versions  Fixed
  LXD      4.0.0 –   —

TIMELINE
  Jul 16  Reserved by canonical
  Aug 12  Published (CNA: canonical)
  Sep 11  EXPLOIT PUBLISHED — CVE-2026-63295 (Canonical LXD). Public exploit reference added.

CWE-863 · CNA: canonical · CVSS v3.1 · 1 reference · NVD status: Analyzed

Description

An authorization bypass vulnerability in LXD allows an authenticated attacker to bypass project-level container isolation restrictions. When a project is configured with restrictions on container privileges (such as enforcing restricted.containers.privilege=isolated), LXD fails to enforce the requirement if an instance configuration omits the security.idmap.isolated key. An attacker can exploit this flaw by creating or updating an instance without explicitly setting security.idmap.isolated, bypassing the target project's security constraints.

Lifecycle

Complete event history — 3 events, chronological
Date	Event	Detail
July 16, 2026	Reserved	Reserved by canonical
August 12, 2026	Published	Published (CNA: canonical)
September 11, 2026	EXPLOIT PUBLISHED	EXPLOIT PUBLISHED — CVE-2026-63295 (Canonical LXD). Public exploit reference added.

Affected

Affected products and packages — 1 row
Vendor	Product / Package	Ecosystem	Version introduced	Fixed
Canonical	LXD	—	4.0.0	—

Weaknesses

CWE-863

References (1)

https://github.com/canonical/lxd/security/advisories/GHSA-7vp9-3vmp-c5jm [Vendor Advisory, Exploit]

Authoritative record: CVE-2026-63295 at cve.org

Vendors: canonical

Weaknesses: CWE-863

About this page

This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2026-63295 from the CVE Program record, NVD enrichment, the CISA KEV catalog, EPSS, and OSV advisories. The box score's numbers (CVSS, EPSS, KEV status) are current as of Sunday, October 4, 2026 UTC and are re-derived as the archive grows; only dated daily editions are immutable pages of record. The authoritative source for this identifier is cve.org.