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10.0 Critical

CVE-2026-4370 A vulnerability was identified in Juju from version 3.2.0 until 3.6.19 and from version 4.0 until 4.0.4, where the…

Description

A vulnerability was identified in Juju from version 3.2.0 until 3.6.19 and from version 4.0 until 4.0.4, where the internal Dqlite database cluster fails to perform proper TLS client and server authentication. Specifically, the Juju controller's database endpoint does not validate client certificates when a new node attempts to join the cluster. An unauthenticated attacker with network reachability to the Juju controller's Dqlite port can exploit this flaw to join the database cluster. Once joined, the attacker gains full read and write access to the underlying database, allowing for total data compromise.

Affected products and versions

Product Affected versions Fixed in
Juju 4.0 4.0 → < 4.0.4 4.0.4
Juju 3.2 3.2.0 → < 3.6.20 3.6.20

References

Timeline

  1. Published
  2. Last modified

Other CVEs of Juju

The 13 CVEs of Juju →
CVE-2026-93336 Missing authorization in the unit resources download route in Canonical Juju 4.0 through 4.0.15 allows a… 7.1 High CVE-2026-5412 In Juju versions prior to 2.9.57 and 3.6.21, an authorization issue exists in the Controller facade 9.9 Critical CVE-2026-5774 Improper synchronization of the userTokens map in the API server in Canonical Juju 4.0.5, 3.6.20, and 2.9.56 may allow… 6.1 Medium CVE-2026-32694 In Juju from version 3.0.0 through 3.6.18, when a secret owner grants permissions to a secret to a grantee, the secret… 6.6 Medium
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