{"id":"CVE-2026-1237","state":"PUBLISHED","title":"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 invali","description":"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.","publishedAt":"2026-01-28T15:01:46.364Z","updatedAt":"2026-01-28T15:06:23.120Z","severity":{"score":2.1,"label":"Low","version":"4.0","vector":"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","source":"canonical"},"assigner":"canonical","products":["Canonical juju"],"affected":[{"vendor":"Canonical","product":"juju","defaultStatus":"affected","versions":[{"version":"0","status":"affected","versionType":"semver"}]}],"references":["https://github.com/juju/juju/security/advisories/GHSA-j477-6vpg-6c8x"],"weaknesses":["CWE-672","CWE-347"],"ingestedAt":"2026-10-29T20:11:10.572Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/1xxx/CVE-2026-1237.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-1237","state":"PUBLISHED","datePublished":"2026-01-28T15:01:46.364Z","dateUpdated":"2026-01-28T15:06:23.120Z","assignerShortName":"canonical","assignerOrgId":"cc1ad9ee-3454-478d-9317-d3e869d708bc","dateReserved":"2026-01-20T16:56:24.051Z"},"containers":{"cna":{"descriptions":[{"lang":"en","value":"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."}],"affected":[{"vendor":"Canonical","product":"juju","defaultStatus":"affected","versions":[{"version":"0","status":"affected","versionType":"semver"}]}],"references":[{"url":"https://github.com/juju/juju/security/advisories/GHSA-j477-6vpg-6c8x"}],"metrics":[{"cvssV4_0":{"Automatable":"NOT_DEFINED","Recovery":"NOT_DEFINED","Safety":"NOT_DEFINED","attackComplexity":"HIGH","attackRequirements":"PRESENT","attackVector":"ADJACENT","baseScore":2.1,"baseSeverity":"LOW","exploitMaturity":"NOT_DEFINED","privilegesRequired":"LOW","providerUrgency":"NOT_DEFINED","subAvailabilityImpact":"LOW","subConfidentialityImpact":"LOW","subIntegrityImpact":"LOW","userInteraction":"NONE","valueDensity":"NOT_DEFINED","vectorString":"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","version":"4.0","vulnAvailabilityImpact":"LOW","vulnConfidentialityImpact":"LOW","vulnIntegrityImpact":"LOW","vulnerabilityResponseEffort":"NOT_DEFINED"},"format":"CVSS","scenarios":[{"lang":"en","value":"GENERAL"}]}],"problemTypes":[{"descriptions":[{"cweId":"CWE-672","description":"CWE-672 Operation on a Resource after Expiration or Release","lang":"en","type":"CWE"}]},{"descriptions":[{"cweId":"CWE-347","description":"CWE-347 Improper Verification of Cryptographic Signature","lang":"en","type":"CWE"}]}],"providerMetadata":{"shortName":"canonical","orgId":"cc1ad9ee-3454-478d-9317-d3e869d708bc","dateUpdated":"2026-01-28T15:01:46.364Z"},"source":{"discovery":"INTERNAL"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-01-28T15:05:47.431871Z","id":"CVE-2026-1237","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-01-28T15:06:23.120Z"}}]}}}