CVE-2026-112816 PUBLISHED

Improper certificate validation in the HTTPS listener in LXD

Assigner: canonical
Reserved: 19.10.2026 Published: 30.10.2026 Updated: 31.10.2026

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.

Metrics

CVSS 4.0

CVSS Vector: 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
CVSS Score: 10

Exploitability Metrics		Vulnerable System Impact Metrics		Subsequent System Impact Metrics
Attack Vector	Network	Confidentiality	High	Confidentiality	High
Attack Complexity	Low	Integrity	High	Integrity	High
Attack Requirements	None	Availability	High	Availability	High
Privileges Required	None
User Interaction	None

CVSS 4.0

Product Status

Vendor	Canonical
Product	LXD
Versions	Default: unaffected affected from 4.0.14 to 4.0.15 (excl.) affected from 5.0.10 to 5.0.11 (excl.) affected from 5.21.8 to 5.21.9 (excl.) affected from 6.9.0 to 6.10.1 (excl.)

Credits

Stéphane Graber reporter

References

Problem Types

CWE-295 Improper certificate validation CWE

Impacts

CAPEC-475 Signature Spoofing by Improper Validation