CVSS 3.1
4.1 mediumCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:N/A:NCVE-2026-70480
Medium (4.1) in openwebui open webui. EPSS 0.3% chance of exploitation in the next 30 days. Fixed in open-webui 0.11.0.
Open WebUI is an extensible, feature-rich, and user-friendly self-hosted AI platform. From 0.6.34 until 0.11.0, Open WebUI renders vega and vega-lite fenced code blocks in chat content by building a Vega view in the viewer browser without a restricted resource loader. Any user who can place such a block where another user will see it can make that user browser issue attacker-chosen outbound GET requests and read responses from same-origin or CORS-permissive targets into the rendered page. This issue is fixed in 0.11.0.
Severity
- EPSS
- 0.3% chance of exploitation in the next 30 days; higher than 28% of CVEs (scores of 2026-10-31)
- CWE
- CWE-918
- Published
- Modified
- Record from
- the NVD, synced
Affected
- openwebui:open_webui
Packages (OSV)
| Advisory | Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|---|
| GHSA-rffm-9q57-q649 | PyPI | open-webui | >=0.6.34 <0.11.0 | 0.11.0 |
| PYSEC-2026-3651 | PyPI | open-webui | >=0.6.34 <0.11.0 | 0.11.0 |
References
- https://github.com/open-webui/open-webui/commit/5278eb906ebecefc6538a19bc86df09d997e43e6
- https://github.com/open-webui/open-webui/pull/26806
- https://github.com/open-webui/open-webui/releases/tag/v0.11.0
- https://github.com/open-webui/open-webui/security/advisories/GHSA-rffm-9q57-q649
- https://github.com/open-webui/open-webui/security/advisories/GHSA-rffm-9q57-q649