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.
{
"cna_assigner": "VulnCheck",
"cwe_ids": [
"CWE-639"
],
"osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/82xxx/CVE-2026-82284.json"
}{
"extracted_events": [
{
"introduced": "0"
},
{
"last_affected": "0.0.322"
},
{
"fixed": "0.0.322"
}
],
"source": [
"AFFECTED_FIELD",
"DESCRIPTION"
]
}