Open WebUI has vulnerable dependency on starlette via fastapi
Priority LOW 38CWE-400Published · Updated
Key facts
- Attack vector
- —
- Privileges required
- —
- User interaction
- —
- Attack complexity
- —
- Impact type
- Denial of service
- Confidentiality · integrity · availability
- —
- Fix status
- Fixed
No CVSS vector from any source. Fix status from GitHub. Impact type from CWE-400.
Summary
In version 0.3.32 of open-webui, the application uses a vulnerable version of the starlette package through its dependency on fastapi. The starlette package versions <=0.49 are susceptible to uncontrolled resource consumption, which can be exploited to cause a denial of service through memory exhaustion. This issue is addressed in fastapi version 0.115.3.
Why it matters now
Fix Fixed open-webui (PyPI): 0.5.8
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | open-webui (PyPI) | before 0.5.8 | 0.5.8 | Patch available | GHSA-w466-2wfc-8g58 |
- open-webui (PyPI) Vendor— Affected before 0.5.8 Fixed in 0.5.8 Patch available GHSA-w466-2wfc-8g58
Remediation
- Fix · GHSA-w466-2wfc-8g58 open-webui (PyPI) Fixed in 0.5.8 Advisory →
Timeline
- 2026-10-03 Threatist record created from GHSA-w466-2wfc-8g58
References
Other 5
- https://github.com/encode/starlette/security/advisories/GHSA-f96h-pmfr-66vw
- https://github.com/open-webui/open-webui/commit/941836406219f51dc5f807ea426795b42884b688
- https://github.com/open-webui/open-webui
- https://github.com/open-webui/open-webui/releases/tag/v0.5.8
- https://huntr.com/bounties/56175583-70e3-4d53-94de-3f3a8e2423ec
Sources
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences