CVE-2026-5774 | BDVDB-2026-326235 Detail

CanonicalJuju

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.

Impact#

CAPEC-26: Leveraging Race Conditions

Weaknesses#

CWE-362 Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')

References#

Exploit#

No public exploit known

History#

Version 12026-04-10Record published in the CVE List.

Published

Published: 2026-04-10
Last modified: 2026-04-10

Vendor information

Vendor: Canonical
Product: Juju

All Canonical vulnerabilities

Score

6.1 Medium

EPSS

less than 1%, Very Low

Estimated chance of exploitation in the next 30 days. EPSS percentile: 16.9.

KEV

Not listed in the CISA Known Exploited Vulnerabilities catalog.

Impact

Race Condition

Action

No specific action is recorded in the source data. Check the references for vendor guidance.

Affected Systems

Vulnerable
>= 2.0.0 and < 2.9.57
Fixed
2.9.57
Vulnerable
>= 3.0.0 and < 3.6.21
Fixed
3.6.21
Vulnerable
>= 4.0.0 and < 4.0.6
Fixed
4.0.6

Scoring System

CVSS v4.0

6.1 Medium

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

Metric breakdown
Attack Vector	Network
Attack Complexity	High
Attack Requirements	Present
Privileges Required	Low
User Interaction	None
Vulnerable System Confidentiality	None
Vulnerable System Integrity	None
Vulnerable System Availability	High
Subsequent System Confidentiality	None
Subsequent System Integrity	None
Subsequent System Availability	None

CVSS v3.1

Not available

CVSS v3.0

Not available

CVSS v2

Not available

Source: CVE List v5 (record); CISA KEV (kev, action); FIRST EPSS (epss).