Answer in brief
CVE-2026-12392 records a Medium severity (CVSS 5.3) vulnerability in RPC secret disclosure via vendor data endpoint in Canonical MAAS. The current sources do not mark it as known exploited. The current feed maps Canonical/MAAS (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
CVSS is 5.3. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Canonical/MAAS (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Canonical/MAASgeneric | >=3.4.0 <3.4.10 || >=3.5.0 <3.5.14 || >=3.6.0 <3.6.5 || >=3.7.0 <3.7.3 || >=0 <3.8.0 | 3.4.10, 3.5.14, 3.6.5, 3.7.3, 3.8.0 |
Published upstream
Oct 2, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Oct 2, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Oct 2, 2026
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.
Quoted source text, attributed separately from HOL analysis.