medium4.3
CVE-2025-63681
open-webui is Vulnerable to Incorrect Access Control
Impact
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.
Affected packages
| Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|
| pip | open-webui | <= 0.6.33 | none recorded |
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| Openwebui | Open Webui | Version 0.6.41 |
Weakness classification
References
- NVD record
- CVE.org record
- GitHub advisory
- https://github.com/TOAST-Research/pocs/blob/main/openwebui/arbitirary_task_stop/report.md
- https://github.com/open-webui/open-webui/blob/46ae3f4f5d7d4d706041bdae4ad2d802e568712b/backend/open_webui/main.py#L1652
- https://github.com/advisories/GHSA-frv8-gffc-37px
- https://nvd.nist.gov/vuln/detail/CVE-2025-63681