CVE-2026-12392

Impact

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.

Affected packages

This record carries no package version data, so it cannot be matched against a dependency list automatically. Read the advisory and compare your version by hand.

Weakness classification

References

• NVD record
• CVE.org record
• https://bugs.launchpad.net/maas/+bug/2153942
• https://github.com/canonical/maas/commit/3864ef9dca54e36e3d34d18233b87666b8ee1dc8
• https://github.com/canonical/maas/commit/65e89c05970f4514f9e6de043c2779017b43ad9d
• https://github.com/canonical/maas/commit/8489979d64b0e7f124e7cef66d02b21263918f9b
• https://github.com/canonical/maas/commit/a9486ad0cc90f4571142c1bea13f02d1361cb31e
• https://github.com/canonical/maas/commit/ead659f70224538517c80478c3fd8c9e730aae79