6.4

CVE-2026-5774: canonical juju Race Condition

CVSS: 6.4v3.1MediumAnalyzed
AliasesGHSA-7m55-2hr4-pw78GO-2026-5228
Published 10-04-2026Last modified 10-04-2026
Open JSON

Vulnerability summary

CVE-2026-5774 is a medium (CVSS 6.4) Race Condition vulnerability in canonical juju. EPSS estimates a 0.30% chance of exploitation in the next 30 days, higher than 21.2% of scored vulnerabilities. 1 public exploit is recorded.

Overall risk
36/100
0100
Medium · default modelHow is this calculated?
CVSS score
6.4/10
010
Medium · v3.1 (NVD)
EPSS score
0.30%
0%100%
Low · +0.06 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits1github

Advisory lineage

Upstream 0 · Downstream 1 · Related 1
OPENSUSE-SU-2026:21483-1

Timeline

  1. 10-04-2026
    PublishedVulnerability first disclosed.
  2. 10-04-2026
    Last modifiedVulnerability information updated.

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.

CVSS metrics

5 scores · 3 sources · 2 versions

EPSS trend

Probability

0.30%

Chance of exploitation in the next 30 days

Percentile

21%

Versus all other CVEs

30-day change

+0.06 pp

From 0.24% on 20-09-2026

20-09-202620-10-2026
EPSS score
0.30%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

1 found
  • githubUnverified

    Juju

    Maturity: poc

Weaknesses

CWE · root cause

Affected systems

Canonical1 product
  • juju≥ 2.0.0, < 2.9.57 | ≥ 3.0.0, < 3.6.21 | ≥ 4.0.0, < 4.0.6 | < 2.9.57 | ≥ 3.0, < 3.6.21 | ≥ 4.0, < 4.0.6
Github.com/juju1 product
  • juju< 0.0.0-20260408003526-d395054dc2c3

2 vendors · 2 products

References

5 links