CVE-2026-82284

Description

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.

CVSS Vector

References

• https://github.com/QuivrHQ/quivr
• https://github.com/QuivrHQ/quivr/blob/v0.0.322/backend/api/quivr_api/modules/chat/controller/chat_routes.py
• https://github.com/QuivrHQ/quivr/issues/3697
• https://www.vulncheck.com/advisories/quivr-chat-endpoints-missing-ownership-validation
• https://github.com/QuivrHQ/quivr/issues/3697