CVE-2026-82284: Quivr Chat Endpoints Missing Ownership Validation
Quivr versions through 0.0.322 fail to validate chat ownership in the GET /chat/{chatid}/history, DELETE /chat/{chatid}, and POST /chat/{chatid}/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 Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Configuration
Fix missing ownership validation so that authenticated requests to GET /chat/{chat_id}/history, DELETE /chat/{chat_id}, and POST /chat/{chat_id}/question/answer verify the requesting user owns the specified chat_id.
Quivr API chat ownership validation = enabled
Event History
Frequently Asked Questions
Who can exploit this issue?
An attacker must be authenticated to Quivr and able to reach the affected chat endpoints. No user interaction is required, and the attack complexity is low.
Which operations are exposed?
The affected endpoints allow an authenticated attacker to retrieve another user's chat history, delete another user's chat, or submit fabricated answers into another user's conversation. Exposed history may include private knowledge base content.
Are deployments running version 0.0.322 affected?
Yes. The issue affects Quivr versions through 0.0.322, which includes version 0.0.322.