CVE-2026-5412 Juju CloudSpec API could leak senstive information

What is CVE-2026-5412?

CVE-2026-5412 is a critical missing authorization vulnerability in Canonical Juju, published on 10 Apr 2026. Any signed-in user can exploit it over the network, with no action from the victim.

Official description

In Juju versions prior to 2.9.57 and 3.6.21, an authorization issue exists in the Controller facade. An authenticated user can call the CloudSpec API method to extract the cloud credentials used to bootstrap the controller. This allows a low-privileged user to access sensitive credentials. This issue is resolved in Juju versions 2.9.57 and 3.6.21.

Weakness: CWE-285

Which versions are affected by CVE-2026-5412?

3 open source packages ship an affected version, including github.com/juju/juju. It affects 1 product.

Products include Canonical Juju.

How do I fix CVE-2026-5412?

Upgrade github.com/juju/juju to 0.0.0-20260408003526-d395054dc2c3 or later.

Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.

Is CVE-2026-5412 being exploited?

There is no known exploitation of CVE-2026-5412 in the wild and no public exploit code.

Other vulnerabilities in Canonical Juju

• CVE-2026-4370 Improper TLS Client/Server authentication and certificate verification on Database Cluster Critical 10.0
• CVE-2017-9232 Juju uses a UNIX domain socket without setting appropriate permissions Critical 9.8
• CVE-2026-32693 Unauthorized access to Kubernetes secrets in Juju High 8.8
• CVE-2025-0928 Arbitrary executable upload via authenticated endpoint High 8.8
• CVE-2025-53513 Zip slip vulnerability in Juju High 8.8

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as GHSA-w5fq-8965-c969, GO-2026-5692.