CVE-2026-87996
Open WebUI: SSRF into internal services via DNS rebinding in the Playwright web loader
CVSS Score
7.7
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-367 CWE-918 |
| Vendor | open-webui |
| Product | open-webui |
| Published | Sep 9, 2026 |
| Last Updated | Sep 10, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Changed
Confidentiality
High
Integrity
None
Availability
None
Affected Versions
open-webui / open-webui
>= 0.9.6, < 0.11.1
References
github.com: https://github.com/open-webui/open-webui/security/advisories/GHSA-4v28-j6q3-5m4r github.com: https://github.com/open-webui/open-webui/pull/28634 github.com: https://github.com/open-webui/open-webui/commit/27402ff210bfa253445720920dfb86b15a00327b github.com: https://github.com/open-webui/open-webui/releases/tag/v0.11.1