CVE-2026-112816

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.

References

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