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Open WebUI: SSRF into internal services via DNS rebinding in the Playwright web loader

CVSS 3.1 7.7 HIGHCheck source for fixed versionsKEV status unknown

cve-program · CVE-2026-87996

Published

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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Affected versions, risk and source history

Exploitation and risk

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cve-program · CVE-2026-87996

Published

Open WebUI: SSRF into internal services via DNS rebinding in the Playwright web loader

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.

Source published
9 Sep 2026 21:28:10 UTC
Source modified
10 Sep 2026 13:48:24 UTC
Saved here
23 Oct 2026 15:48:27 UTC
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CVSS 3.1 · 7.7 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N

ChangeIntel

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Sources read 15 Nov 03:49 UTC · 252 of 275 readable · 247 fully read · documentation 469/469 current