CVE-2026-87996

HighCVSS 7.7/10Last modified Sep 16, 2026

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.

Metrics

CVSS 3.1 7.7/10CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N

Weakness enumeration

CWE-367CWE-918

Affected software

No affected versions have been published.

Timeline

Published
Sep 9, 2026
Last modified
Sep 16, 2026
NVD status
Analyzed

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CVE-2026-87996: High severity, CVSS 7.7 | Vulnix