CVE-2026-82280
Quivr Prompt Endpoints Missing Ownership Validation
- State
- Published
- Severity
- 7.1 High
- Published
- Aug 28, 2026
- Updated
- Sep 24, 2026
- Reserved
- Aug 28, 2026
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 7.1 High | CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:H/VA:N/SC:N/SI:N/SA:N | VulnCheck |
| 3.1 | 7.1 High | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:N | VulnCheck |
Weaknesses
- CWE-639 Authorization Bypass Through User-Controlled Key
Affected Products
| Product | Versions |
|---|---|
quivrQuivrHQ |
|
References
- GitHub Issue #3698issue-tracking
- https://github.com/QuivrHQ/quivrproduct
- Vulnerable code: prompt_routes.pytechnical-description
- VulnCheck Advisory: Quivr Prompt Endpoints Missing Ownership Validationthird-party-advisory
- https://github.com/The-Vibe-Company/Quivr/issues/3698exploit
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