RPC secret disclosure via vendor data endpoint in Canonical MAAS
Historical advisory recorded 23 Oct 2026 15:48:27 UTC. Read the latest advisory.
cve-program · CVE-2026-12392
PublishedAn 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.
Read the publisher's advisoryAffected versions, risk and source history
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CVE-2026-12392 · CVE overview and exploitation status
cve-program · CVE-2026-12392
- https://github.com/canonical/maas/commit/8489979d64b0e7f124e7cef66d02b21263918f9b
- https://github.com/canonical/maas/commit/a9486ad0cc90f4571142c1bea13f02d1361cb31e
- https://github.com/canonical/maas/commit/ead659f70224538517c80478c3fd8c9e730aae79
- https://github.com/canonical/maas/commit/3864ef9dca54e36e3d34d18233b87666b8ee1dc8
- https://github.com/canonical/maas/commit/65e89c05970f4514f9e6de043c2779017b43ad9d
- https://bugs.launchpad.net/maas/+bug/2153942
This historical advisory does not include today's related changes. Open the latest advisory to find current connections.