CVE-2026-86867
🗓️ 23 Sep 2026 17:44:52Reported by certccType 
cve🔗 web.nvd.nist.gov📰️ 1 Media mentions👁 43 Views🌐 WEB
| Reporter | Title | Published | Views | Family All 7 |
|---|---|---|---|---|
 | CVE-2026-86867 Cinnamon's kotaemon contains improper authorization checks in multi‑user chat handlers | 23 Sep 202617:44 | – | cvelist |
 | EUVD-2026-85508 | 23 Sep 202617:44 | – | euvd |
 | CVE-2026-86867 | 23 Sep 202618:17 | – | nvd |
 | PT-2026-97421 | 23 Sep 202600:00 | – | ptsecurity |
 | CVE-2026-86867: Exposure of Sensitive Information to an Unauthorized Actor | 23 Sep 202600:00 | – | rapid7 |
 | Cinnamon's Kotaemon contains improper authorization checks in Kotaemon multi‑user chat handlers | 23 Sep 202600:00 | – | cert |
 | CVE-2026-86867 Cinnamon's kotaemon contains improper authorization checks in multi‑user chat handlers | 23 Sep 202617:44 | – | vulnrichment |
[
{
"vendor": "Cinnamon AI",
"product": "Kotaemon",
"versions": [
{
"status": "affected",
"version": "0.12.0"
}
]
}
]| Parameter | Position | Path | Description | CWE |
|---|---|---|---|---|
| id | path | /chat/conversation/get | Insecure Direct Object Reference (IDOR) allowing any authenticated user to read another user's chat transcripts, RAG history, and AI-generated plots by providing a different conversation ID. | CWE-200, CWE-639, CWE-862 |
| id | path | /chat/conversation/delete | Insecure Direct Object Reference (IDOR) allowing any authenticated user to permanently delete another user's conversation by providing a different conversation ID. | CWE-200, CWE-639, CWE-862 |
| id | path | /chat/conversation/rename | Insecure Direct Object Reference (IDOR) allowing any authenticated user to rename another user's conversation by providing a different conversation ID. | CWE-200, CWE-639, CWE-862 |
| id | path | /chat/conversation/update_suggestions | Insecure Direct Object Reference (IDOR) allowing any authenticated user to overwrite another user's conversation chat suggestion list by providing a different conversation ID. | CWE-200, CWE-639, CWE-862 |
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24 Sep 2026 15:17Current
5.7Medium risk
Vulners AI Score5.7
CVSS 3.16.5
EPSS0.00238
SSVC