CVE-2026-87996

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.

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Produits concernés

• open-webui
• Openwebui open webui

Scores CVSS

Faiblesses (CWE)

• CWE-367
• CWE-918

Références

• https://github.com/open-webui/open-webui/commit/27402ff210bfa253445720920dfb86b15a00327b Patch
• https://github.com/open-webui/open-webui/pull/28634 Issue TrackingPatch
• https://github.com/open-webui/open-webui/releases/tag/v0.11.1 Release Notes
• https://github.com/open-webui/open-webui/security/advisories/GHSA-4v28-j6q3-5m4r ExploitVendor Advisory
• https://github.com/open-webui/open-webui/security/advisories/GHSA-4v28-j6q3-5m4r ExploitVendor Advisory

Ailleurs

• NVD
• CVE.org
• CIRCL Vulnerability-Lookup
• CERT-FR
• GitHub Advisories