CVE-2026-12392 — RPC secret disclosure via vendor data endpoint 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 i…
Published: 2026-10-02 · CVSS: 5.3 · CVSS 3.1
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.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7