{"id":"CVE-2026-1237","details":"Vulnerable cross-model authorization in juju. If a charm's cross-model permissions are revoked or expire, a malicious user who is able to update database records can mint an invalid macaroon that is incorrectly validated by the juju controller, enabling a charm to maintain otherwise revoked or expired permissions. This allows a charm to continue relating to another charm in a cross-model relation, and use their workload without their permission. No fix is available as of the time of writing.","aliases":["GHSA-j477-6vpg-6c8x","GO-2026-4388"],"modified":"2026-09-30T03:49:20.190130110Z","published":"2026-01-28T15:01:46.364Z","related":["SUSE-SU-2026:0403-1","openSUSE-SU-2026:21483-1"],"database_specific":{"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/1xxx/CVE-2026-1237.json","cna_assigner":"canonical","cwe_ids":["CWE-347","CWE-672"]},"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/1xxx/CVE-2026-1237.json"},{"type":"ADVISORY","url":"https://github.com/juju/juju/security/advisories/GHSA-j477-6vpg-6c8x"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-1237"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/juju/juju","events":[{"introduced":"0"},{"last_affected":"0"}],"database_specific":{"extracted_events":[{"introduced":"0"},{"last_affected":"0"}],"source":"AFFECTED_FIELD"}}],"versions":["0"],"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-1237.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V4","score":"CVSS:4.0/AV:A/AC:H/AT:P/PR:L/UI:N/VC:L/VI:L/VA:L/SC:L/SI:L/SA:L"}]}