| Component | Open WebUI |
| Severity | high (CVSS 7.7) |
| CVSS vector | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N |
| Published (NVD) | 2026-09-09 |
| Last modified | 2026-09-16 |
| Affected versions | open_webui >= 0.9.6, < 0.11.1 |
| Fixed in | 0.11.1 |
| Weakness | CWE-367CWE-918 |
| CISA KEV | not listed |
NVD description
Open WebUI is an extensible, feature-rich, and user-friendly self-hosted AI platform. From 0.9.6 until 0.11.1, SafePlaywrightURLLoader in backend/open_webui/retrieval/web/utils.py validated a user-controlled hostname in Python and then let the Playwright browser resolve it again in the sync and async request interceptors. An authenticated user controlling authoritative DNS could return a public address to validation and an internal address to the browser, exposing responses from internal services or cloud metadata through web search or URL ingestion. This issue is fixed in version 0.11.1.
What to do
- Upgrade Open WebUI to
0.11.1or later. - Do not expose the component's API or UI to the internet without authentication in front of it.
Sources
- NVD: CVE-2026-87996
- https://github.com/open-webui/open-webui/security/advisories/GHSA-4v28-j6q3-5m4r
- https://github.com/open-webui/open-webui/commit/27402ff210bfa253445720920dfb86b15a00327b
- https://github.com/open-webui/open-webui/pull/28634
- https://github.com/open-webui/open-webui/releases/tag/v0.11.1
Read more
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