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.
Metrics
CVSS 3.1 7.1/10
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:NWeakness enumeration
Affected software
| Vendor | Product | Versions |
|---|---|---|
| QuivrHQ | quivr | <= 0.0.322 |
References
- https://github.com/QuivrHQ/quivr
- https://github.com/QuivrHQ/quivr/blob/v0.0.322/backend/api/quivr_api/modules/prompt/controller/prompt_routes.py
- https://github.com/QuivrHQ/quivr/issues/3698
- https://www.vulncheck.com/advisories/quivr-prompt-endpoints-missing-ownership-validation
- https://github.com/The-Vibe-Company/Quivr/issues/3698
Timeline
- Published
- Aug 28, 2026
- Last modified
- Sep 23, 2026
- NVD status
- Deferred