{"id":"CVE-2026-78606","state":"PUBLISHED","title":"Incorrect Authorization in Kibana Leading to Unauthorized Disclosure, Modification, and Deletion of Data","description":"Incorrect Authorization (CWE-863) in Kibana can lead to unauthorized disclosure, modification, and deletion of data via Accessing Functionality Not Properly Constrained by ACLs (CAPEC-1). Where two authenticated principals originating from different authentication realms share the same username value, one could read, modify, and delete the other's private Elastic AI Assistant Knowledge Base entries.","publishedAt":"2026-09-01T19:20:37.599Z","updatedAt":"2026-09-01T19:40:45.659Z","severity":{"score":4.2,"label":"Medium","version":"3.1","vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:N","source":"elastic"},"assigner":"elastic","products":["Elastic Kibana"],"affected":[{"vendor":"Elastic","product":"Kibana","defaultStatus":"unaffected","versions":[{"version":"8.19.11","status":"affected","lessThanOrEqual":"8.19.20","versionType":"semver"},{"version":"9.3.0","status":"affected","lessThanOrEqual":"9.4.5","versionType":"semver"},{"version":"9.5.0","status":"affected","lessThanOrEqual":"9.5.1","versionType":"semver"}]}],"references":["https://discuss.elastic.co/t/kibana-8-19-21-9-4-6-9-5-2-security-update-esa-2026-142/390093"],"weaknesses":["CWE-863"],"ingestedAt":"2026-10-29T20:13:07.220Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/78xxx/CVE-2026-78606.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-78606","state":"PUBLISHED","datePublished":"2026-09-01T19:20:37.599Z","dateUpdated":"2026-09-01T19:40:45.659Z","assignerShortName":"elastic","assignerOrgId":"271b6943-45a9-4f3a-ab4e-976f3fa05b5a","dateReserved":"2026-08-24T21:13:52.890Z"},"containers":{"cna":{"title":"Incorrect Authorization in Kibana Leading to Unauthorized Disclosure, Modification, and Deletion of Data","descriptions":[{"lang":"en","value":"Incorrect Authorization (CWE-863) in Kibana can lead to unauthorized disclosure, modification, and deletion of data via Accessing Functionality Not Properly Constrained by ACLs (CAPEC-1). Where two authenticated principals originating from different authentication realms share the same username value, one could read, modify, and delete the other's private Elastic AI Assistant Knowledge Base entries."}],"affected":[{"vendor":"Elastic","product":"Kibana","defaultStatus":"unaffected","versions":[{"version":"8.19.11","status":"affected","lessThanOrEqual":"8.19.20","versionType":"semver"},{"version":"9.3.0","status":"affected","lessThanOrEqual":"9.4.5","versionType":"semver"},{"version":"9.5.0","status":"affected","lessThanOrEqual":"9.5.1","versionType":"semver"}]}],"references":[{"url":"https://discuss.elastic.co/t/kibana-8-19-21-9-4-6-9-5-2-security-update-esa-2026-142/390093"}],"metrics":[{"format":"CVSS","scenarios":[{"lang":"en","value":"GENERAL"}],"cvssV3_1":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:N","baseScore":4.2,"baseSeverity":"MEDIUM","attackVector":"NETWORK","attackComplexity":"HIGH","privilegesRequired":"LOW","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"LOW","integrityImpact":"LOW","availabilityImpact":"NONE"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-863","description":"CWE-863 Incorrect Authorization","lang":"en","type":"CWE"}]}],"providerMetadata":{"shortName":"elastic","orgId":"271b6943-45a9-4f3a-ab4e-976f3fa05b5a","dateUpdated":"2026-09-01T19:20:37.599Z"},"source":{"discovery":"Elastic"},"x_generator":{"engine":"Elastic CVE Publisher 1.0.0"},"impacts":[{"capecId":"CAPEC-1","descriptions":[{"lang":"en","value":"CAPEC-1 Accessing Functionality Not Properly Constrained by ACLs"}]}]},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-09-01T19:39:56.417764Z","id":"CVE-2026-78606","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":"2026-09-01T19:40:45.659Z"}}]}}}