{"resultsPerPage":1,"startIndex":0,"totalResults":1,"format":"NVD_CVE","version":"2.0","timestamp":"2026-10-04T19:30:55.473","vulnerabilities":[{"cve":{"id":"CVE-2026-86867","sourceIdentifier":"cret@cert.org","published":"2026-09-23T18:17:09.323","lastModified":"2026-09-24T15:17:49.290","vulnStatus":"Deferred","cveTags":[],"descriptions":[{"lang":"en","value":"Cinnamon's Kotaemon (all versions up to and including v0.12.0) multi-user chat interface contains multiple vulnerabilities due to incorrect authorization and improper access controls. There are four handler methods in `libs/ktem/ktem/pages/chat/control.py` that load a Conversation record by its ID without comparing the requester's `user_id` to the conversation's owner `Conversation.user`. This allows any authenticated user to perform the following actions:\r\n1. Read other user's chat transcripts, RAG retrieval history, AI-generated plots, and chat suggestions.\r\n2. Permanently delete another user's conversation.\r\n3. Rename another user's conversation.\r\n4. Overwrite another user's conversation's chat suggestion list."}],"affected":[{"source":"cret@cert.org","affectedData":[{"vendor":"Cinnamon AI","product":"Kotaemon","versions":[{"version":"0.12.0","status":"affected"}]}]}],"metrics":{"cvssMetricV31":[{"source":"134c704f-9b21-4f2e-91b3-4a467353bcc0","type":"Secondary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N","baseScore":6.5,"baseSeverity":"MEDIUM","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"LOW","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"NONE","integrityImpact":"HIGH","availabilityImpact":"NONE"},"exploitabilityScore":2.8,"impactScore":3.6}],"ssvcV203":[{"source":"134c704f-9b21-4f2e-91b3-4a467353bcc0","ssvcData":{"timestamp":"2026-09-24T14:37:13.797147Z","id":"CVE-2026-86867","options":[{"exploitation":"none"},{"automatable":"no"},{"technicalImpact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}]},"weaknesses":[{"source":"134c704f-9b21-4f2e-91b3-4a467353bcc0","type":"Secondary","description":[{"lang":"en","value":"CWE-200"},{"lang":"en","value":"CWE-639"},{"lang":"en","value":"CWE-862"}]}],"references":[{"url":"https://kb.cert.org/vuls/id/754548","source":"cret@cert.org"},{"url":"https://www.kb.cert.org/vuls/id/754548","source":"af854a3a-2127-422b-91ae-364da2661108"}]}}]}