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CVE-2026-112816

Improper certificate validation in the HTTPS listener in LXD

  • Critical 10.0

Description

Improper certificate validation in the HTTPS listener in Canonical LXD 4.0.14, 5.0.10, 5.21.8, 6.9 before 4.0.15, 5.0.11, 5.21.9, 6.10.1 allows an unauthenticated attacker to authenticate as any trusted client and gain full access to the cluster and managed virtual machines via a crafted certificate chain.

Key facts

Published
30 Oct 2026
Last changed
31 Oct 2026
Assigned by
canonical
EPSS
0.303% likely to be exploited in the next 30 days, higher than 23.422% of CVEs (scores for 15 Nov 2026)
SSVC (CISA)
Exploitation: none; Automatable: yes; Technical impact: total

Severity scores

Each score is shown as its source gave it. They are not averaged or merged.

  • 10.0CVSS 4.0, Criticalfrom the CNA (canonical)CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H

Historical context and remediation

This reference retains the original CVE publication date. A recent record update does not mean a new attack occurred.

CAPEC-475 Signature Spoofing by Improper Validation (CNA impact statement)

No explicit remediation statement is available on this page yet. Consult the original record and vendor references before choosing a fix.

Version statuses below come from the CNA. An “unaffected” version is not necessarily a currently supported release or proof of a patch date. EPSS is a dated risk estimate, not a count of historical attacks.

Read the original CVE record.

Affected products

VendorProductVersions
CanonicalLXD
  • Default status: unaffected
  • 4.0.14 up to but excluding 4.0.15 (affected)
  • 5.0.10 up to but excluding 5.0.11 (affected)
  • 5.21.8 up to but excluding 5.21.9 (affected)
  • 6.9.0 up to but excluding 6.10.1 (affected)

Timeline

  1. 30 Oct 2026 Published

Weakness

Related coverage

References