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 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
Primary source · Revision 1
Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.
Security context
Source reference: cve:CVE-2026-12392
MAAS
Source reference: /containers/cna/affected/0/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Structured affected-version data
Original package identities and version rules from this source.
[
{
"repo": "https://github.com/canonical/maas",
"vendor": "Canonical",
"product": "MAAS",
"versions": [
{
"status": "affected",
"version": "3.4.0",
"lessThan": "3.4.10",
"versionType": "semver"
},
{
"status": "affected",
"version": "3.5.0",
"lessThan": "3.5.14",
"versionType": "semver"
},
{
"status": "affected",
"version": "3.6.0",
"lessThan": "3.6.5",
"versionType": "semver"
},
{
"status": "affected",
"version": "3.7.0",
"lessThan": "3.7.3",
"versionType": "semver"
},
{
"status": "affected",
"version": "0",
"lessThan": "3.8.0",
"versionType": "semver"
}
],
"platforms": [
"Linux"
],
"packageName": "maas",
"defaultStatus": "unaffected"
}
]- Related CVEs
- CVE-2026-12392
Source reference:
/cveMetadata/cveId
Publisher severity
medium
Source reference: /containers/cna/metrics
- Event
- #8518 · Revision 1
- Added to Heist Feed
- Publisher date