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CVE-2026-54012— Open WebUI: Forged model meta.knowledge 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，该漏洞源于未检查用户是否拥有或可读取引用的文件，导致恶意模型所有者可附加其他用户的文件ID并读取或删除私有文件。

CVSS 7.1 · High EPSS 0.33% · P23

Possible ATT&CK Techniques 2 AI

T1530.001 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-2026-54012

Vulnerability Information
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Vulnerability Title
Open WebUI: Forged model meta.knowledge 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 a user who can create, update, or import workspace models store arbitrary meta.knowledge entries on their model without checking whether they own or can read the referenced files. Open WebUI then treats meta.knowledge entries of type file as an authorization source in two places: the built-in view_file tool reads the file's extracted text, and has_access_to_file()'s model branch authorizes the file content and file delete endpoints. A malicious model owner can therefore attach another user's file ID to their model metadata and read or delete that private file. This vulnerability is fixed in 0.9.6.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/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，该漏洞源于未检查用户是否拥有或可读取引用的文件，导致恶意模型所有者可附加其他用户的文件ID并读取或删除私有文件。
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-2026-54012

# POC Description Source Link Shenlong Link
AI-Generated POC Verified env Premium
Qwen3.6-35B-A3B · 9701 chars
Pro+ exclusive includes:
Vulnerability reproduction recording (real sandbox build + trigger, exclusive)
In-depth vulnerability mechanism
Trigger conditions & impact
Full executable POC code
Exploit chain & mitigation
POC zip download
100+ AI POC generations per month

III. Intelligence Information for CVE-2026-54012

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Vendor Advisories for CVE-2026-54012 (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-2026-54010 8.3 HIGH Open WebUI: Forged chat-file link allows cross-user file read and deletion
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-2026-54009 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-2026-54012

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