CVE catalog

CVE-2026-63297

Severity: Critical · CVSS 9.9CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
Published: Aug 12, 2026, 8:17:00 PM UTC
Source: [NVD] · [CVE record]
EPSS: 0.34% · Oct 25, 2026

An authorization bypass vulnerability in LXD due to a timing flaw during configuration merging allows an authenticated attacker to bypass target project restrictions during cross-project instance copies. When copying an instance to a target project, LXD performs restriction checks before configuration merging is complete, creating a time-of-check to time-of-use (TOCTOU) condition. An attacker can exploit this flaw to copy instances with disallowed high-privilege configurations into restricted projects, bypassing security controls.

Vulnerable and fixed packages

Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.

Distribution	Package	Release	Version	Status
Debian	lxd	trixie	`5.0.2+git20231211.1364ae4-9+deb13u7`	vulnerable
Debian	lxd	trixie-security	`5.0.2+git20231211.1364ae4-9+deb13u7`	vulnerable
Debian	lxd	bookworm	`5.0.2-5+deb12u6`	vulnerable
Debian	lxd	bookworm-security	`5.0.2-5+deb12u6`	vulnerable
Cpe	lxd	Not reported	`6.9`	fixed
Ubuntu	lxd	pro	`2.18-0ubuntu6`	vulnerable
Ubuntu	lxd	pro	`2.19-0ubuntu1`	vulnerable
Ubuntu	lxd	pro	`2.20-0ubuntu3`	vulnerable
Ubuntu	lxd	pro	`2.20-0ubuntu4`	vulnerable
Ubuntu	lxd	pro	`2.21-0ubuntu1`	vulnerable
Ubuntu	lxd	pro	`2.21-0ubuntu2`	vulnerable
Ubuntu	lxd	pro	`2.21-0ubuntu3`	vulnerable
Ubuntu	lxd	pro	`2.21-0ubuntu4`	vulnerable
Ubuntu	lxd	pro	`3.0.0~beta2-0ubuntu3`	vulnerable
Ubuntu	lxd	pro	`3.0.0~beta3-0ubuntu3`	vulnerable
Ubuntu	lxd	pro	`3.0.0~beta5-0ubuntu2`	vulnerable
Ubuntu	lxd	pro	`3.0.0~beta7-0ubuntu1`	vulnerable
Ubuntu	lxd	pro	`3.0.0-0ubuntu1`	vulnerable
Ubuntu	lxd	pro	`3.0.0-0ubuntu2`	vulnerable
Ubuntu	lxd	pro	`3.0.0-0ubuntu3`	vulnerable
Ubuntu	lxd	pro	`3.0.0-0ubuntu4`	vulnerable
Ubuntu	lxd	pro	`3.0.1-0ubuntu1~18.04.1`	vulnerable
Ubuntu	lxd	pro	`3.0.2-0ubuntu1~18.04.1`	vulnerable
Ubuntu	lxd	pro	`3.0.3-0ubuntu1~18.04.1`	vulnerable
Ubuntu	lxd	pro	`3.0.3-0ubuntu1~18.04.2`	vulnerable
Ubuntu	lxd	pro	`3.0.3-0ubuntu1~18.04.2+esm1`	vulnerable
Ubuntu	lxd	pro	`3.0.3-0ubuntu1~18.04.2+esm2`	vulnerable
Ubuntu	lxd	pro	`3.0.3-0ubuntu1~18.04.2+esm3`	vulnerable
Ubuntu	lxd	20.04	`1:0.7`	vulnerable
Ubuntu	lxd	20.04	`1:0.8`	vulnerable
Ubuntu	lxd	20.04	`1:0.9`	vulnerable
Ubuntu	lxd	20.04	`1:0.10`	vulnerable

Fixed-version evidence

Distribution	Package	Type	Release	Fixed version	Urgency	Origin	Bugs
Debian	lxd	source	trixie	`(unfixed)`	not yet assigned	Not reported	Not reported
Debian	lxd	source	bookworm	`(unfixed)`	end-of-life	Not reported	Not reported
Cpe	lxd	cpe	Not reported	`6.9`	Not reported	NVD-CVE-2026-63297	Not reported

OpenFactory catalog packages

[Debian 12 (Bookworm)]

[lxd]Affected
Details (4)
- 5.0.2-5+deb12u6 · amd64 · bookworm
  Affected
  nvd · lxd · debian · bookworm; nvd · lxd · debian · 12
- 5.0.2-5+deb12u6 · arm64 · bookworm
  Affected
  nvd · lxd · debian · bookworm; nvd · lxd · debian · 12
- 5.0.2-5+deb12u6 · amd64 · bookworm-security
  Affected
  nvd · lxd · debian · bookworm; nvd · lxd · debian · 12
- 5.0.2-5+deb12u6 · arm64 · bookworm-security
  Affected
  nvd · lxd · debian · bookworm; nvd · lxd · debian · 12
[lxd-agent]Affected
Source package: [lxd]
Details (4)
- 5.0.2-5+deb12u6 · amd64 · bookworm
  Affected
  nvd · lxd · debian · bookworm; nvd · lxd · debian · 12
- 5.0.2-5+deb12u6 · arm64 · bookworm
  Affected
  nvd · lxd · debian · bookworm; nvd · lxd · debian · 12
- 5.0.2-5+deb12u6 · amd64 · bookworm-security
  Affected
  nvd · lxd · debian · bookworm; nvd · lxd · debian · 12
- 5.0.2-5+deb12u6 · arm64 · bookworm-security
  Affected
  nvd · lxd · debian · bookworm; nvd · lxd · debian · 12
[lxd-client]Affected
Source package: [lxd]
Details (4)
- 5.0.2-5+deb12u6 · amd64 · bookworm
  Affected
  nvd · lxd · debian · bookworm; nvd · lxd · debian · 12
- 5.0.2-5+deb12u6 · arm64 · bookworm
  Affected
  nvd · lxd · debian · bookworm; nvd · lxd · debian · 12
- 5.0.2-5+deb12u6 · amd64 · bookworm-security
  Affected
  nvd · lxd · debian · bookworm; nvd · lxd · debian · 12
- 5.0.2-5+deb12u6 · arm64 · bookworm-security
  Affected
  nvd · lxd · debian · bookworm; nvd · lxd · debian · 12
[lxd-migrate]Affected
Source package: [lxd]
Details (4)
- 5.0.2-5+deb12u6 · amd64 · bookworm
  Affected
  nvd · lxd · debian · bookworm; nvd · lxd · debian · 12
- 5.0.2-5+deb12u6 · arm64 · bookworm
  Affected
  nvd · lxd · debian · bookworm; nvd · lxd · debian · 12
- 5.0.2-5+deb12u6 · amd64 · bookworm-security
  Affected
  nvd · lxd · debian · bookworm; nvd · lxd · debian · 12
- 5.0.2-5+deb12u6 · arm64 · bookworm-security
  Affected
  nvd · lxd · debian · bookworm; nvd · lxd · debian · 12
[lxd-tools]Affected
Source package: [lxd]
Details (4)
- 5.0.2-5+deb12u6 · amd64 · bookworm
  Affected
  nvd · lxd · debian · bookworm; nvd · lxd · debian · 12
- 5.0.2-5+deb12u6 · arm64 · bookworm
  Affected
  nvd · lxd · debian · bookworm; nvd · lxd · debian · 12
- 5.0.2-5+deb12u6 · amd64 · bookworm-security
  Affected
  nvd · lxd · debian · bookworm; nvd · lxd · debian · 12
- 5.0.2-5+deb12u6 · arm64 · bookworm-security
  Affected
  nvd · lxd · debian · bookworm; nvd · lxd · debian · 12

[Debian 13 (Trixie)]

[golang-github-canonical-lxd-dev]Affected
Source package: [lxd]
Details (4)
- 5.0.2+git20231211.1364ae4-9+deb13u7 · all · trixie
  Affected
  nvd · lxd · debian · 13
- 5.0.2+git20231211.1364ae4-9+deb13u7 · all · trixie
  Affected
  nvd · lxd · debian · 13
- 5.0.2+git20231211.1364ae4-9+deb13u7 · all · trixie-security
  Affected
  nvd · lxd · debian · 13
- 5.0.2+git20231211.1364ae4-9+deb13u7 · all · trixie-security
  Affected
  nvd · lxd · debian · 13
[lxd]Affected
Details (4)
- 5.0.2+git20231211.1364ae4-9+deb13u7 · amd64 · trixie
  Affected
  nvd · lxd · debian · 13
- 5.0.2+git20231211.1364ae4-9+deb13u7 · arm64 · trixie
  Affected
  nvd · lxd · debian · 13
- 5.0.2+git20231211.1364ae4-9+deb13u7 · amd64 · trixie-security
  Affected
  nvd · lxd · debian · 13
- 5.0.2+git20231211.1364ae4-9+deb13u7 · arm64 · trixie-security
  Affected
  nvd · lxd · debian · 13
[lxd-agent]Affected
Source package: [lxd]
Details (4)
- 5.0.2+git20231211.1364ae4-9+deb13u7 · amd64 · trixie
  Affected
  nvd · lxd · debian · 13
- 5.0.2+git20231211.1364ae4-9+deb13u7 · arm64 · trixie
  Affected
  nvd · lxd · debian · 13
- 5.0.2+git20231211.1364ae4-9+deb13u7 · amd64 · trixie-security
  Affected
  nvd · lxd · debian · 13
- 5.0.2+git20231211.1364ae4-9+deb13u7 · arm64 · trixie-security
  Affected
  nvd · lxd · debian · 13
[lxd-client]Affected
Source package: [lxd]
Details (4)
- 5.0.2+git20231211.1364ae4-9+deb13u7 · amd64 · trixie
  Affected
  nvd · lxd · debian · 13
- 5.0.2+git20231211.1364ae4-9+deb13u7 · arm64 · trixie
  Affected
  nvd · lxd · debian · 13
- 5.0.2+git20231211.1364ae4-9+deb13u7 · amd64 · trixie-security
  Affected
  nvd · lxd · debian · 13
- 5.0.2+git20231211.1364ae4-9+deb13u7 · arm64 · trixie-security
  Affected
  nvd · lxd · debian · 13
[lxd-migrate]Affected
Source package: [lxd]
Details (4)
- 5.0.2+git20231211.1364ae4-9+deb13u7 · amd64 · trixie
  Affected
  nvd · lxd · debian · 13
- 5.0.2+git20231211.1364ae4-9+deb13u7 · arm64 · trixie
  Affected
  nvd · lxd · debian · 13
- 5.0.2+git20231211.1364ae4-9+deb13u7 · amd64 · trixie-security
  Affected
  nvd · lxd · debian · 13
- 5.0.2+git20231211.1364ae4-9+deb13u7 · arm64 · trixie-security
  Affected
  nvd · lxd · debian · 13
[lxd-tools]Affected
Source package: [lxd]
Details (4)
- 5.0.2+git20231211.1364ae4-9+deb13u7 · amd64 · trixie
  Affected
  nvd · lxd · debian · 13
- 5.0.2+git20231211.1364ae4-9+deb13u7 · arm64 · trixie
  Affected
  nvd · lxd · debian · 13
- 5.0.2+git20231211.1364ae4-9+deb13u7 · amd64 · trixie-security
  Affected
  nvd · lxd · debian · 13
- 5.0.2+git20231211.1364ae4-9+deb13u7 · arm64 · trixie-security
  Affected
  nvd · lxd · debian · 13

Observed: Oct 27, 2026, 7:10:10 AM UTC

References

[Debian Security Tracker] · [FIRST EPSS] · [National Vulnerability Database (NVD)] · [OSV Package Vulnerability Database] · [SUSE security advisories and VEX]