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Back to active CVEs
Critical · CVSS 10.0CVE-2026-112816

Improper certificate validation in the HTTPS listener in LXDCVE-2026-112816

Answer in brief

CVE-2026-112816 records a Critical severity (CVSS 10.0) vulnerability in Improper certificate validation in the HTTPS listener in LXD. The current sources do not mark it as known exploited. The current feed maps Canonical/lxd (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Oct 30, 2026Updated Oct 30, 2026Source checked Oct 30, 2026First seen by HOL Oct 30, 2026Material review Oct 30, 2026
Upstream Advisory

Record context

Vulnerability class
Missing Auth
EPSS
Not reported
CWE IDs
CWE-295
Source
CVE List V5
Source checked
Oct 30, 2026
References
6 linked sources
Open source record

Key facts

Risk
Critical · CVSS 10.0
Exploitation
Not marked as known exploited
Affected software
1 mapped package or product
Fix availability
Available

Why this deserves its current priority

CVSS is 10.0. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps Canonical/lxd (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
PackageAffected rangeFixed version
Canonical/lxdgeneric>=4.0.14 <4.0.15 || >=5.0.10 <5.0.11 || >=5.21.8 <5.21.9 || >=6.9.0 <6.10.14.0.15, 5.0.11, 5.21.9, 6.10.1

Recommended response

  1. 1Check inventory. Check lockfiles and deployed manifests for Canonical/lxd.
  2. 2Review the reported fix. Update Canonical/lxd to 4.0.15 if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

  1. Published upstream

    Oct 30, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  2. Source modified

    Oct 30, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  3. First seen by HOL

    Oct 30, 2026

Sources and claim methodology

  • Source referencediscourse.ubuntu.com
  • Source referencediscourse.ubuntu.com
  • Source referencediscourse.ubuntu.com
  • Source referencediscourse.ubuntu.com
  • Source referencediscourse.ubuntu.com
  • GitHub security advisorygithub.com
Upstream source 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.

Quoted source text, attributed separately from HOL analysis.