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.
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Affected Vendors & Products
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History
Thu, 02 Apr 2026 20:30:00 +0000
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Canonical
Canonical juju |
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| CPEs | cpe:2.3:a:canonical:juju:*:*:*:*:*:*:*:* | |
| Vendors & Products |
Canonical
Canonical juju |
Wed, 01 Apr 2026 23:45:00 +0000
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| Metrics |
ssvc
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Wed, 01 Apr 2026 08:45:00 +0000
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| 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. | |
| Title | Improper TLS Client/Server authentication and certificate verification on Database Cluster | |
| Weaknesses | CWE-295 CWE-306 |
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| References |
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| Metrics |
cvssV3_1
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Status: PUBLISHED
Assigner: canonical
Published: 2026-04-01T08:09:17.570Z
Updated: 2026-04-01T13:01:08.226Z
Reserved: 2026-03-18T08:46:09.947Z
Link: CVE-2026-4370
Updated: 2026-04-01T13:00:43.615Z
Status : Analyzed
Published: 2026-04-01T09:16:17.717
Modified: 2026-04-02T20:24:48.797
Link: CVE-2026-4370
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