{
"id": "GHSA-3j2c-qqcf-39m8",
"aliases": [
"CVE-2026-82284"
],
"details": "Quivr versions through 0.0.322 fail to validate chat ownership in the GET /chat/{chat_id}/history, DELETE /chat/{chat_id}, and POST /chat/{chat_id}/question/answer endpoints. Authenticated attackers can read other users' conversation histories including private knowledge base content, delete arbitrary chats, and inject fabricated messages into other users' conversations.",
"affected": [],
"modified": "2026-08-28T21:31:27Z",
"severity": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N"
},
{
"type": "CVSS_V4",
"score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X"
}
],
"published": "2026-08-28T21:31:27Z",
"references": [
{
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-82284",
"type": "ADVISORY"
},
{
"url": "https://github.com/QuivrHQ/quivr/issues/3697",
"type": "WEB"
},
{
"url": "https://github.com/QuivrHQ/quivr",
"type": "WEB"
},
{
"url": "https://github.com/QuivrHQ/quivr/blob/v0.0.322/backend/api/quivr_api/modules/chat/controller/chat_routes.py",
"type": "WEB"
},
{
"url": "https://www.vulncheck.com/advisories/quivr-chat-endpoints-missing-ownership-validation",
"type": "WEB"
}
],
"schema_version": "1.4.0",
"database_specific": {
"cwe_ids": [
"CWE-639"
],
"severity": "HIGH",
"github_reviewed": false,
"nvd_published_at": "2026-08-28T20:20:19Z",
"github_reviewed_at": null
}
}