CVE-2026-82280 Quivr Prompt Endpoints Missing Ownership Validation
Authenticated users can modify or read any prompt due to missing ownership validation, affecting all users of shared brains.
- 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-2026-82280?
CVE-2026-82280 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 through 0.0.322 fails to validate ownership in prompt endpoints, allowing authenticated users to modify any prompt by identifier. Attackers with read-only access to shared brains can read exposed prompt identifiers and overwrite system prompts affecting all brain users.
Weakness: CWE-639
Which versions are affected by CVE-2026-82280?
How do I fix CVE-2026-82280?
No fix has been published for CVE-2026-82280 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-2026-82280 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-82280 exists.
Sources
Also known as GHSA-2mxf-m4gh-hj3g.