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.
Advisories

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Fixes

Solution

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Workaround

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History

Fri, 28 Aug 2026 22:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'poc', 'Technical Impact': 'total'}, 'version': '2.0.3'}


Fri, 28 Aug 2026 19:45:00 +0000

Type Values Removed Values Added
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.
Title Quivr Chat Endpoints Missing Ownership Validation
First Time appeared Quivr
Quivr quivr
Weaknesses CWE-639
CPEs cpe:2.3:a:quivr:quivr:*:*:*:*:*:*:*:*
Vendors & Products Quivr
Quivr quivr
References
Metrics cvssV3_1

{'score': 8.1, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N'}

cvssV4_0

{'score': 8.6, 'vector': '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'}


Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: VulnCheck

Published:

Updated: 2026-08-28T20:23:13.732Z

Reserved: 2026-08-28T11:12:51.983Z

Link: CVE-2026-82284

cve-icon Vulnrichment

Updated: 2026-08-28T20:22:52.177Z

cve-icon NVD

Status : Received

Published: 2026-08-28T20:20:19.823

Modified: 2026-08-28T22:16:56.650

Link: CVE-2026-82284

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-08-28T22:15:04Z

Weaknesses