CVE-2026-5774

EUVD-2026-21366
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.
Race Condition
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
canonicalCNA
6.1 MEDIUM
NETWORK
HIGH
LOW
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
Base Score
CVSS 3.x
EPSS Score
Percentile: Unknown
Early Detection
Affected products identified ahead of NVD analysis through intelligence sources.
VendorProductVersionSource
canonicaljuju
2.0.0 ≤
𝑥
< 2.9.57
CNA
canonicaljuju
3.0.0 ≤
𝑥
< 3.6.21
CNA
canonicaljuju
4.0.0 ≤
𝑥
< 4.0.6
CNA
Common Weakness Enumeration
References
https://github.com/juju/juju/pull/22205
https://github.com/juju/juju/pull/22206
https://github.com/juju/juju/security/advisories/GHSA-7m55-2hr4-pw78
https://github.com/juju/juju/security/advisories/GHSA-7m55-2hr4-pw78