CVE-2026-34179 Update of type field in restricted TLS certificate allows privilege escalation to cluster admin

In Canonical LXD versions 4.12 through 6.7, the doCertificateUpdate function in lxd/certificates.go does not validate the Type field when handling PUT/PATCH requests to /1.0/certificates/fingerprint for restricted TLS certificate users, allowing a remote authenticated attacker to escalate...

CVE-2026-34177

Canonical LXD versions 4.12 through 6.7 contain an incomplete denylist in isVMLowLevelOptionForbidden lxd/project/limits/permissions.go, which omits raw.apparmor and raw.qemu.conf from the set of keys blocked under the restricted.virtual-machines.lowlevel=block project restriction. A remote...

CVE-2025-54291

Information disclosure in images API in Canonical LXD before 6.5 and 5.21.4 on all platforms allows unauthenticated remote attackers to determine project existence via differing HTTP status code responses...

UBUNTU-CVE-2025-54286

Cross-Site Request Forgery CSRF in LXD-UI in Canonical LXD versions = 5.0 on Linux allows an attacker to create and start container instances without user consent via crafted HTML form submissions exploiting client certificate authentication...

CVE-2025-54291 Project existence disclosure in LXD images API

Information disclosure in images API in Canonical LXD before 6.5 and 5.21.4 on all platforms allows unauthenticated remote attackers to determine project existence via differing HTTP status code responses...

CVE-2025-54286 CSRF Vulnerability When Using Client Certificate Authentication with the LXD-UI

Cross-Site Request Forgery CSRF in LXD-UI in Canonical LXD versions = 5.0 on Linux allows an attacker to create and start container instances without user consent via crafted HTML form submissions exploiting client certificate authentication...