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CVE-2026-34179 (GCVE-0-2026-34179)

Vulnerability from cvelistv5 – Published: 2026-04-09 09:22 – Updated: 2026-04-09 11:54
VLAI
Title
Update of type field in restricted TLS certificate allows privilege escalation to cluster admin
Summary
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.
Severity
9.1 (Critical)
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H
SSVC
Exploitation: poc Automatable: no Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-04-09 11:54 UTC
CWE
  • CWE-915 - Improperly controlled modification of Dynamically-Determined object attributes
Assigner
References
Impacted products
Vendor Product Version CPE status
Canonical lxd Affected: 4.12.0 , < 5.0.7 (semver)
Affected: 5.1.0 , < 5.21.5 (semver)
Affected: 6.0.0 , < 6.8.0 (semver)
guessed Create a notification for this product.
Credits
Miha Purg
Show details on NVD website
To clipboard 

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  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
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  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


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