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-2026-63294
Canonical LXD — Root RCE via image backup.yaml symlink
AV AC PR UI S C I A CVSS EPSS %ile KEV
N L L N C H H H 9.9 .0088 57.7 —
AFFECTED
Product Versions Fixed
LXD 4.0.0 – —
TIMELINE
Jul 16 Reserved by canonical
Aug 12 Published (CNA: canonical)
Sep 11 EXPLOIT PUBLISHED — CVE-2026-63294 (Canonical LXD). Public exploit reference added.
Description
A link following vulnerability in LXD allows an attacker to achieve root command execution on the host system. During the import or unpacking of crafted image or backup archives, LXD fails to properly validate and confine the backup.yaml file when it exists as a symbolic link. An attacker can exploit this flaw by providing a malicious archive with a symlinked backup.yaml file, causing LXD to process unconfined configuration metadata and execute arbitrary commands with root privileges.
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-2026-63294 (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 | — |
About this page
This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2026-63294 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.