CVE-2026-5774

Name: CVE-2026-5774
Creator: NVD / NIST
Published: 2026-04-10T13:16:46.07+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 6/10EPSS 0.24%

Last modified Jun 17, 2026

CVE-2026-5774 is a medium-severity vulnerability rated 6/10 on the CVSS scale. 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.. EPSS estimates a 0.24% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1

6.4/10

CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:H

CVSS 4.0

6/10

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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

EPSS Probability

0.24%

15.4th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-362

Affected Software

Vendor	Product	Versions
Canonical	Juju	< 2.9.57
Canonical	Juju	>= 3.0, < 3.6.21
Canonical	Juju	>= 4.0, < 4.0.6

References

https://github.com/juju/juju/pull/22205Issue Tracking
https://github.com/juju/juju/pull/22206Issue Tracking
https://github.com/juju/juju/security/advisories/GHSA-7m55-2hr4-pw78Exploit, Third Party Advisory
https://github.com/juju/juju/security/advisories/GHSA-7m55-2hr4-pw78Exploit, Third Party Advisory

Timeline

Published: Apr 10, 2026
Last Modified: Jun 17, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2026-5774?

How severe is CVE-2026-5774?

CVE-2026-5774 has a CVSS score of 6/10 (MEDIUM severity). The EPSS model estimates a 0.24% probability of exploitation in the next 30 days.

How do I fix CVE-2026-5774?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2026-5774?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST