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 an authenticated user to possibly cause a denial of service on the server or possibly reuse a single-use discharge token.

CVSS v3 6.4 MEDIUM

6.4^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 1.6 / Impact : 4.7

Attack Vector NETWORK

Attack Complexity HIGH

Privileges Required LOW

User Interaction NONE

Confidentiality Impact LOW

Integrity Impact LOW

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://github.com/juju/juju/pull/22205	Issue Tracking
https://github.com/juju/juju/pull/22206	Issue Tracking
https://github.com/juju/juju/security/advisories/GHSA-7m55-2hr4-pw78	Exploit Third Party Advisory
https://github.com/juju/juju/security/advisories/GHSA-7m55-2hr4-pw78	Exploit Third Party Advisory

Configurations

Configuration 1 (hide)

OR	cpe:2.3:a:canonical:juju::::::::
	cpe:2.3:a:canonical:juju::::::::
	cpe:2.3:a:canonical:juju::::::::

History

26 Oct 2026, 21:10

Type	Values Removed	Values Added
Summary		(es) Sincronización incorrecta del mapa userTokens en el servidor API en Canonical Juju 4.0.5, 3.6.20, y 2.9.56 puede permitir a un usuario autenticado causar posiblemente una denegación de servicio en el servidor o posiblemente reutilizar un token de descarga de un solo uso.

Information

Published : 2026-04-10 13:16

Updated : 2026-10-26 21:10

NVD link : CVE-2026-5774

Mitre link : CVE-2026-5774

CVE.ORG link : CVE-2026-5774

JSON object : View

Products Affected

canonical

juju

CWE

CWE-362

Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')

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