CVE-2026-82284
Quivr Chat Endpoints Missing Ownership Validation
- State
- Published
- Severity
- 8.6 High
- Published
- Aug 28, 2026
- Updated
- Sep 24, 2026
- Reserved
- Aug 28, 2026
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 8.6 High | 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 | VulnCheck |
| 3.1 | 8.1 High | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N | VulnCheck |
Weaknesses
- CWE-639 Authorization Bypass Through User-Controlled Key
Affected Products
| Product | Versions |
|---|---|
quivrQuivrHQ |
|
References
- GitHub Issue #3697issue-tracking
- https://github.com/QuivrHQ/quivrproduct
- Vulnerable code: chat_routes.pytechnical-description
- VulnCheck Advisory: Quivr Chat Endpoints Missing Ownership Validationthird-party-advisory
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