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CVE-2026-54016— Open WebUI: Open WebUI BOLA: `search_knowledge_files` Allows Unauthorized Knowledge Base File Enumeration

CVSS 4.3 · Medium EPSS 0.23% · P13
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I. Basic Information for CVE-2026-54016

Vulnerability Information
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Vulnerability Title
Open WebUI: Open WebUI BOLA: `search_knowledge_files` Allows Unauthorized Knowledge Base File Enumeration
Source: NVD (National Vulnerability Database)
Vulnerability Description
Open WebUI is a self-hosted artificial intelligence platform designed to operate entirely offline. Prior to 0.9.6, Open WebUI has a Broken Object Level Authorization (BOLA) vulnerability in the builtin search_knowledge_files tool. When native function calling is enabled and the selected model has no attached knowledge bases, an authenticated user can call search_knowledge_files with an arbitrary knowledge_id. The function then returns file metadata from that knowledge base without checking whether the user has read access. This allows unauthorized enumeration of private or restricted knowledge base files. This vulnerability is fixed in 0.9.6.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
Source: NVD (National Vulnerability Database)
Vulnerability Type
通过用户控制密钥绕过授权机制
Source: NVD (National Vulnerability Database)

Affected Products

VendorProductAffected VersionsCPESubscribe
open-webuiopen-webui < 0.9.6 -

II. Public POCs for CVE-2026-54016

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III. Intelligence Information for CVE-2026-54016

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Other References for CVE-2026-54016 (1)

Same Patch Batch · open-webui · 2026-06-23 · 15 CVEs total

CVE-2026-540118.7 HIGHOpen WebUI: Stored XSS in Mermaid Markdown Preview
CVE-2026-540088.5 HIGHOpen WebUI: Redirect-Bypass SSRF in OAuth `_process_picture_url`
CVE-2026-540108.3 HIGHOpen WebUI: Forged chat-file link allows cross-user file read and deletion
CVE-2026-540187.7 HIGHOpen WebUI: SSRF Protection Bypass in Playwright Web Loader via HTTP Redirects
CVE-2026-540137.6 HIGHOpen WebUI: Stored XSS to Account Takeover via Model Profile Images in Open WebUI
CVE-2026-540127.1 HIGHOpen WebUI: Forged model meta.knowledge allows cross-user file read and deletion
CVE-2026-540096.5 MEDIUMOpen WebUI: Cross-user file disclosure via /api/chat/completions image_url field
CVE-2026-540196.5 MEDIUMOpen WebUI: RAG ACL Bypass in Milvus Multitenancy Mode
CVE-2026-540156.4 MEDIUMOpen WebUI: Prompt history IDOR: unbound history_id allows cross-prompt read and deletion
CVE-2026-540216.3 MEDIUMOpen WebUI: Authenticated users can target arbitrary configured Ollama backends via unguar
CVE-2026-540225.3 MEDIUMOpen WebUI: Any authenticated user can read other users' private notes via Socket.IO
CVE-2026-540064.3 MEDIUMOpen WebUI: Calendar event re-parenting allows writing events into another user's calendar
CVE-2026-540144.3 MEDIUMOpen WebUI: Sibling-Prefix Path Traversal via /cache/{path} in open-webui/open-webui
CVE-2026-54007Open WebUI: Cross-origin postMessage confirmation bypass via action:submit

IV. Related Vulnerabilities

Same product: open-webui
Same vendor: open-webui
Same weakness: CWE-639

V. Comments for CVE-2026-54016

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