EUVD-2026-17847
GHSA-gvrj-cjch-728p
CVSS Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
Lifecycle Timeline
4Description
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.
Analysis
Unauthenticated remote database cluster compromise in Canonical Juju (versions 3.2.0-3.6.19 and 4.0-4.0.4) allows complete data exfiltration and manipulation through missing TLS certificate validation on Dqlite database endpoints. The controller's database cluster accepts unauthorized node joins from any network-accessible attacker, granting full read/write access to all stored credentials, configurations, and orchestration data. …
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Remediation
Within 24 hours: Identify all Juju controller deployments running versions 3.2.0-3.6.19 or 4.0-4.0.4 and document network exposure of Dqlite database ports. Implement immediate network segmentation to restrict access to Dqlite endpoints (default port 29999) to trusted administrative networks only. …
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Priority Score
Vendor Status
Debian
| Release | Status | Fixed Version | Urgency |
|---|---|---|---|
| (unstable) | fixed | (unfixed) | - |
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External POC / Exploit Code
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