Description
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 an authenticated user to possibly cause a denial of service on the server or possibly reuse a single-use discharge token.
Published: 2026-04-10
Score: 6.1 Medium
EPSS: < 1% Very Low
KEV: No
Impact: Denial of Service and Token Replay
Action: Patch Now
AI Analysis

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Remediation

No vendor fix or workaround currently provided.

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Tracking

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Advisories
Source ID Title
Github GHSA Github GHSA GHSA-7m55-2hr4-pw78 Juju: In-Memory Token Store for Discharge Tokens Lacks Concurrency Safety and Persistence
History

Wed, 22 Apr 2026 21:00:00 +0000

Type Values Removed Values Added
CPEs cpe:2.3:a:canonical:juju:*:*:*:*:*:*:*:*
Metrics cvssV3_1

{'score': 6.4, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:H'}


Fri, 10 Apr 2026 14:45:00 +0000

Type Values Removed Values Added
First Time appeared Canonical
Canonical juju
Vendors & Products Canonical
Canonical juju

Fri, 10 Apr 2026 13:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'poc', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Fri, 10 Apr 2026 12:30:00 +0000

Type Values Removed Values Added
Description 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 an authenticated user to possibly cause a denial of service on the server or possibly reuse a single-use discharge token.
Title Juju API Server Denial of Service and Authentication Replay via Unsynchronized Token Map
Weaknesses CWE-362
References
Metrics cvssV4_0

{'score': 6.1, 'vector': 'CVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N'}


cve-icon MITRE

Status: PUBLISHED

Assigner: canonical

Published:

Updated: 2026-04-10T12:41:28.720Z

Reserved: 2026-04-08T07:22:06.115Z

Link: CVE-2026-5774

cve-icon Vulnrichment

Updated: 2026-04-10T12:41:02.565Z

cve-icon NVD

Status : Analyzed

Published: 2026-04-10T13:16:46.070

Modified: 2026-04-22T20:46:45.453

Link: CVE-2026-5774

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-04-13T13:06:05Z

Weaknesses