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CVE PROGRAM SOURCE RECORD9.1 Critical

CVE-2026-34179

Update of type field in restricted TLS certificate allows privilege escalation to cluster admin

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Status
Published
Published
Updated
Assigning organization
canonical

Description

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 privileges to cluster admin.

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

Canonical lxd

Default version status: unaffected

  • 4.12.0 to < 5.0.7affected
  • 5.1.0 to < 5.21.5affected
  • 6.0.0 to < 6.8.0affected

References