CVE-2026-87996

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

Published: Sep 9, 2026Updated: Sep 16, 2026 Sources: CVE List NVDCWE-367

7.7HIGH

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.

No summary for this CVE yet.

CVSS Vector Breakdown

Exploitability

AV:NAttack Vector

Network

AC:LAttack Complexity

Low

PR:LPrivileges Required

Low

UI:NUser Interaction

None

Scope

S:CScope

Changed

Impact

C:HConfidentiality

High

I:NIntegrity

None

A:NAvailability

None

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Weaknesses

CWE-367 CWE-918

Affected Products

openwebui

oss-projectaka open webui

open webuiOn-premWeb App

AI / ML / ai-agent-tooling

open-webui

oss-projectaka open-webui/open-webui

open-webuiOn-premWeb App

AI / ML / ai-agent-tooling

Exploitability

Official Patch Available

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Attack Graph

Products CVE Techniques Tactics

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MITRE ATT&CK

3 techniques

Command and Control

Initial Access

Privilege Escalation

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References

https://github.com/open-webui/open-webui/commit/27402ff210bfa253445720920dfb86b15a00327b

github.com

https://github.com/open-webui/open-webui/pull/28634

github.com

https://github.com/open-webui/open-webui/releases/tag/v0.11.1

github.com

and 1 more references View all →

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