CVE-2026-82284

High

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.

SeverityHigh

CVSS8.1

Exploit probability—

ProductQuivr

PublishedAug 28, 2026

First seenAug 28, 2026

Weakness typeCWE-639Authorization bypass through user-controlled key

How to fix

Sources list no fixed version or patch link for this vulnerability.

Affected products

Product	Affected versions	Fixed in
QuivrHQ quivr	v ≤ 0.0.322	—

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