CVE-2026-12392: Vulnerability in Canonical MAAS
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.
CVE-2026-12392: Vulnerability in Canonical MAAS
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.
CVSS v3.1
Score 5.3medium
Affected software
Canonical
MAAS
pkg:github/maasRun on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- canonical
- Date Reserved
- 2026-06-16T12:16:09.502Z
- Cvss Version
- 3.1
- State
- PUBLISHED
Threat ID: 6ac00a1fa43b0b3b89f69c60
Added to database: 10/02/2026, 19:46:39 UTC
Last updated: 10/02/2026, 19:46:39 UTC
Views: 1
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