CVE-2026-5774 MEDIUM

CVE-2026-5774: Juju API Server Denial of Service and Authentication Replay via Unsynchronized Token Map

Vendor Canonical
Product Juju
Weakness CWE-362
Published April 10, 2026
Last update April 10, 2026
View on NVD All CVEs

CVSS base score

6.1/10
Attack vector Network
Attack complexity High
Privileges required Low
User interaction None
Confidentiality —
Integrity —

CVSS 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

What the vulnerability does

01Description

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.

Key dates

02Disclosure timeline

April 10, 2026 CVE published
April 10, 2026 Record updated