CVE-2025-63681
Medium
Description
open-webui v0.6.33 is vulnerable to Incorrect Access Control. The API /api/tasks/stop/ directly accesses and cancels tasks without verifying user ownership, enabling attackers (a normal user) to stop arbitrary LLM response tasks.
SeverityMedium
CVSS4.3
Exploit probability—
ProductOpenwebui Open Webui
PublishedDec 4, 2025
First seenDec 4, 2025
Weakness typeCWE-284Improper access control
How to fix
Update
- open-webui0.9.0 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| openwebui open_webui | 0.6.41 | — |
| open-webuiPyPI | v ≤ 0.6.33, v < 0.9.0 | 0.9.0 |
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