CVE-2026-112816: Canonical LXD

Improper certificate validation in the HTTPS listener in LXD

CVSS 10.0 CriticalCriticalEPSS 0.0030 · 23rd percentile

Critical, because:

CVSS score 10.0: 9.0 or more.

Published by the CVE Program (CNA: canonical) at 30 Oct 2026, 16:42 UTC. agentprime has not analysed this yet, so whether it affects any app is not known. This CVE names a vendor and product rather than a package, so the lockfile check doesn’t match it.

Affected products, as the CNA wrote them
Vendor	Product	Versions
Canonical	LXD Package name: lxd https://canonical.com/lxd	affected 4.0.14 to before 4.0.15 semver affected 5.0.10 to before 5.0.11 semver affected 5.21.8 to before 5.21.9 semver affected 6.9.0 to before 6.10.1 semver Other versions: unaffected

Identifiers

CVE-2026-112816

CNA

canonical

Weakness (CWE)

CWE-295

Not analysed yet

We haven’t published our own analysis of this CVE. If a person reviews it, this page will say what’s affected and what has to be true for it to matter.

Severity and exploitation

Score	Rating	CVSS	Vector	Source
10.0	Critical	4.0	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	CNA (canonical)

CISA KEV Not listed.
EPSS 0.0030, the 23rd percentile, on 5 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

30 Oct 2026, 16:42 UTC Confirmed by the CVE List

Sources

References from the CNA

github.com/canonical/lxd/security/advisories/GHSA-99jp-jwmc-65p4 vendor-advisory
discourse.ubuntu.com/t/security-advisory-critical-vulnerability-found-in-canonical-lxd-and-microcloud/90557 vendor-advisory
discourse.ubuntu.com/t/lxd-6-10-1-lts-has-been-released/90024 release-notes
discourse.ubuntu.com/t/lxd-5-21-9-lts-has-been-released/90565/1 release-notes
discourse.ubuntu.com/t/lxd-5-0-11-lts-has-been-released/90570/1 release-notes
discourse.ubuntu.com/t/lxd-4-0-15-lts-has-been-released/90571 release-notes

Facts on this page come from the CVE List as the CNA published them, with CVSS from the sources named above, CISA KEV and FIRST EPSS. Vendors, products and versions are shown as the CNA wrote them. We don’t reproduce the CVE’s description.