CVE-2026-82284 Quivr Chat Endpoints Missing Ownership Validation
Authenticated attackers can access, delete, or modify other users' chat histories and inject messages due to missing ownership validation.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-82284?
CVE-2026-82284 is a high-severity missing authorization vulnerability in QuivrHQ quivr, published on 28 Aug 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official 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.
Weakness: CWE-639
Which versions are affected by CVE-2026-82284?
How do I fix CVE-2026-82284?
No fix has been published for CVE-2026-82284 yet. Limit exposure of the affected software until one is available.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2026-82284 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-82284 exists.
Sources
Also known as GHSA-3j2c-qqcf-39m8.