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CVE-2026-54010— Open WebUI: Forged chat-file link allows cross-user file read and deletion

Quick assessment

Affected
open-webui open-webui
Exploitation
Public or AI PoC available; prioritize validation
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Open WebUI是Open WebUI团队开源的一个可扩展、功能丰富、用户友好的自托管 WebUI。 Open WebUI 0.9.6之前版本存在安全漏洞，该漏洞源于权限许可和访问控制问题，可能导致已验证用户未检查文件所有权及读取权限的情况下附加任意file_id值，进而通过共享聊天读取或删除受害者文件。

CVSS 8.3 · High EPSS 0.42% · P34

Possible ATT&CK Techniques 1 AI

T1530 · Data from Cloud Storage

Affected Version Matrix 1

VendorProduct Version RangeStatus
open-webui open-webui < 0.9.6 affected
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I. Basic Information for CVE-2026-54010

Vulnerability Information
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Vulnerability Title
Open WebUI: Forged chat-file link allows cross-user file read and deletion
Source: CVE Program / CVE List V5
Vulnerability Description
Open WebUI is a self-hosted artificial intelligence platform designed to operate entirely offline. Prior to 0.9.6, Open WebUI lets an authenticated user attach arbitrary file_id values to their own chat message without checking whether they own or can read those files. If the attacker then shares that chat and grants themselves read access, has_access_to_file() treats the victim file as accessible through the shared chat, and the file endpoints read or delete the victim file. This vulnerability is fixed in 0.9.6.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:L
Source: CVE Program / CVE List V5
Vulnerability Type
访问控制不恰当
Source: CVE Program / CVE List V5
Vulnerability Title
Open WebUI 权限许可和访问控制问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Open WebUI是Open WebUI团队开源的一个可扩展、功能丰富、用户友好的自托管 WebUI。 Open WebUI 0.9.6之前版本存在安全漏洞，该漏洞源于权限许可和访问控制问题，可能导致已验证用户未检查文件所有权及读取权限的情况下附加任意file_id值，进而通过共享聊天读取或删除受害者文件。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
open-webui open-webui < 0.9.6 -

II. Public POCs for CVE-2026-54010

# POC Description Source Link Shenlong Link
AI-Generated POC Premium
Qwen3.6-35B-A3B · 8500 chars
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In-depth vulnerability mechanism
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Exploit chain & mitigation
POC zip download
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III. Intelligence Information for CVE-2026-54010

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Vendor Advisories for CVE-2026-54010 (1)

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

CVE-2026-54011 8.7 HIGH Open WebUI: Stored XSS in Mermaid Markdown Preview
CVE-2026-54008 8.5 HIGH Open WebUI: Redirect-Bypass SSRF in OAuth `_process_picture_url`
CVE-2026-54018 7.7 HIGH Open WebUI: SSRF Protection Bypass in Playwright Web Loader via HTTP Redirects
CVE-2026-54013 7.6 HIGH Open WebUI: Stored XSS to Account Takeover via Model Profile Images in Open WebUI
CVE-2026-54012 7.1 HIGH Open WebUI: Forged model meta.knowledge allows cross-user file read and deletion
CVE-2026-54009 6.5 MEDIUM Open WebUI: Cross-user file disclosure via /api/chat/completions image_url field
CVE-2026-54019 6.5 MEDIUM Open WebUI: RAG ACL Bypass in Milvus Multitenancy Mode
CVE-2026-54015 6.4 MEDIUM Open WebUI: Prompt history IDOR: unbound history_id allows cross-prompt read and deletion
CVE-2026-54021 6.3 MEDIUM Open WebUI: Authenticated users can target arbitrary configured Ollama backends via unguar
CVE-2026-54022 5.3 MEDIUM Open WebUI: Any authenticated user can read other users' private notes via Socket.IO
CVE-2026-54016 4.3 MEDIUM Open WebUI: Open WebUI BOLA: `search_knowledge_files` Allows Unauthorized Knowledge Base F
CVE-2026-54006 4.3 MEDIUM Open WebUI: Calendar event re-parenting allows writing events into another user's calendar
CVE-2026-54014 4.3 MEDIUM Open WebUI: Sibling-Prefix Path Traversal via /cache/{path} in open-webui/open-webui
CVE-2026-54007 Open WebUI: Cross-origin postMessage confirmation bypass via action:submit

IV. Related Vulnerabilities

Same product: open-webui
Same vendor: open-webui
Same weakness: CWE-284

V. Comments for CVE-2026-54010

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