CVE-2026-82284: Authorization Bypass Through User-Controlled Key in QuivrHQ quivr
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 v4.0
Score 8.6high
Affected software
QuivrHQ
quivr
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-82284 affects Quivr versions up to 0.0.322 by failing to validate ownership of chats in the GET /chat/{chat_id}/history, DELETE /chat/{chat_id}, and POST /chat/{chat_id}/question/answer endpoints. Authenticated attackers can exploit this to read other users' private conversation histories, delete arbitrary chats, and insert fabricated messages into other users' conversations, resulting in significant confidentiality and integrity violations.
Potential Impact
The vulnerability allows authenticated attackers to bypass authorization controls, leading to unauthorized disclosure of private chat histories, deletion of chats belonging to other users, and injection of false information into conversations. This compromises user privacy and data integrity within the affected application.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is available, restrict access to the affected endpoints to trusted users only and monitor for suspicious activity related to chat access and modification.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- VulnCheck
- Date Reserved
- 2026-08-28T11:12:51.983Z
- Cvss Version
- 4.0
- State
- PUBLISHED
Threat ID: 6a91e417acd9273b4942e932
Added to database: 08/28/2026, 19:40:07 UTC
Last enriched: 09/25/2026, 02:44:13 UTC
Last updated: 10/11/2026, 06:48:19 UTC
Views: 46
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