An information exposure vulnerability in Canonical MAAS prior to versions 3.4.10, 3.5.14, 3.6.5, 3.7.3, and 3.8.0 allows an unauthenticated attacker to retrieve the RPC secret in plaintext via the vendor data metadata endpoint. If a target machine was deployed with the 'register as rack' option enabled, an attacker who obtains or infers the machine's system ID can query the preseed/metadata server to leak the secret.
History

Sat, 03 Oct 2026 17:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Fri, 02 Oct 2026 20:45:00 +0000

Type Values Removed Values Added
Weaknesses CWE-200

Fri, 02 Oct 2026 19:45:00 +0000

Type Values Removed Values Added
Description An information exposure vulnerability in Canonical MAAS prior to versions 3.4.10, 3.5.14, 3.6.5, 3.7.3, and 3.8.0 allows an unauthenticated attacker to retrieve the RPC secret in plaintext via the vendor data metadata endpoint. If a target machine was deployed with the 'register as rack' option enabled, an attacker who obtains or infers the machine's system ID can query the preseed/metadata server to leak the secret.
Title RPC secret disclosure via vendor data endpoint in Canonical MAAS
First Time appeared Canonical
Canonical maas
CPEs cpe:2.3:a:canonical:maas:*:*:linux:*:*:*:*:*
Vendors & Products Canonical
Canonical maas
References
Metrics cvssV3_1

{'score': 5.3, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N'}


cve-icon MITRE

Status: PUBLISHED

Assigner: canonical

Published: 2026-10-02T19:24:09.110Z

Updated: 2026-10-04T14:50:39.521Z

Reserved: 2026-06-16T12:16:09.502Z

Link: CVE-2026-12392

cve-icon Vulnrichment

Updated: 2026-10-03T15:51:55.635Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2026-10-02T20:17:01.817

Modified: 2026-10-06T16:00:36.547

Link: CVE-2026-12392

cve-icon Redhat

No data.