Medium severity5.3NVD Advisory· Published Oct 2, 2026
CVE-2026-12392
CVE-2026-12392
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.
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Affected products
2Patches
Vulnerability mechanics
References
6- bugs.launchpad.net/maas/+bug/2153942nvd
- github.com/canonical/maas/commit/3864ef9dca54e36e3d34d18233b87666b8ee1dc8nvd
- github.com/canonical/maas/commit/65e89c05970f4514f9e6de043c2779017b43ad9dnvd
- github.com/canonical/maas/commit/8489979d64b0e7f124e7cef66d02b21263918f9bnvd
- github.com/canonical/maas/commit/a9486ad0cc90f4571142c1bea13f02d1361cb31envd
- github.com/canonical/maas/commit/ead659f70224538517c80478c3fd8c9e730aae79nvd
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