CVE-2026-5774 | THREATINT

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.

PUBLISHED Reserved 2026-04-08 | Published 2026-04-10 | Updated 2026-04-10 | Assigner canonical

MEDIUM: 6.1CVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N

Problem types

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

Product status

Default status

unaffected

2.0.0 (semver) before 2.9.57

affected

3.0.0 (semver) before 3.6.21

affected

4.0.0 (semver) before 4.0.6

affected

References

github.com/juju/juju/security/advisories/GHSA-7m55-2hr4-pw78 exploit

github.com/juju/juju/security/advisories/GHSA-7m55-2hr4-pw78 (In-Memory Token Store for Discharge Tokens Lacks Concurrency Safety and Persistence) vdb-entry vendor-advisory

github.com/juju/juju/pull/22206 patch issue-tracking

github.com/juju/juju/pull/22205 patch issue-tracking

cve.org (CVE-2026-5774)

nvd.nist.gov (CVE-2026-5774)

Download JSON