CVE-2026-45316
Open WebUI: Read-Only Users Can Toggle Note Pin Status via Incorrect Permission Check (Write via Read-Only Access)
- State
- Published
- Severity
- 3.5 Low
- Published
- May 15, 2026
- Updated
- May 18, 2026
- Reserved
- May 11, 2026
Description
Open WebUI is a self-hosted artificial intelligence platform designed to operate entirely offline. Prior to 0.9.3, the POST /api/v1/notes/{id}/pin endpoint performs a write operation (toggling the is_pinned field) but only checks for read permission. Users with read-only access to a shared note can pin/unpin it, which is a state-modifying action that should require write permission. This vulnerability is fixed in 0.9.3.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 3.1 | 3.5 Low | CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:L/A:N | GitHub_M |
Weaknesses
- CWE-863 Incorrect Authorization
Affected Products
| Product | Versions |
|---|---|
open-webuiopen-webui |
|
References
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