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VulnerabilityPublished

CVE-2026-16033: Canonical LXD · Path Traversal

Affects Canonical LXDSource CVE Database V5

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Not known to be exploited · CVSS 8.5 High : upgrade to 5.0.8 or 4.0.12 soon.

Data as of 11 Nov 2026, 23:24 UTC

CVSS 3.1 base score
8.5High
How severe the flaw is on the 0–10 CVSS scale.
EPSS
0.4% chance of exploitation in 30 days – higher than 40% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch
Available – fixed in 5.0.8, 4.0.12
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:L/A:N

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 12 Aug 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 11 Nov 2026.

What to do

Upgrade Canonical LXD to 5.0.8 or 4.0.12.

Affected software

ProductAffectedFixed in
CanonicalLXDAffected
  • >=5.0.0 <5.0.8
Fixed in
  • 5.0.8
CanonicalLXDAffected
  • >=4.0.0 <4.0.12
Fixed in
  • 4.0.12
GitHubLXDpkg:github/LXDOther threatsAffected
  • >=4.0.0 <4.0.12
  • >=5.0.0 <5.0.8
Fixed in
  • 4.0.12
  • 5.0.8

Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.

Description

A path traversal vulnerability in LXD allows an attacker to achieve arbitrary host file read or unconstrained file creation. When processing image metadata templates, LXD fails to properly sanitize or restrict template file paths from escaping the instance templates directory (specifically affecting virtual machine / QEMU driver execution paths). An attacker can exploit this flaw by providing a crafted image archive with malicious template directives containing path traversal sequences, causing LXD to access or write files outside the intended template directory on the host system.

References

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