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CVE-2026-44569— Open WebUI: Insecure Message Access Breaks Authorization

CVSS 7.1 · High EPSS 0.27% · P18

Affected Version Matrix 1

VendorProductVersion RangeStatus
open-webuiopen-webui< 0.6.19affected
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I. Basic Information for CVE-2026-44569

Vulnerability Information
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Vulnerability Title
Open WebUI: Insecure Message Access Breaks Authorization
Source: NVD (National Vulnerability Database)
Vulnerability Description
Open WebUI is a self-hosted artificial intelligence platform designed to operate entirely offline. Prior to 0.6.19, there's an IDOR in the channels message management system that allows authenticated users to modify or delete any message within channels they have read access to. The vulnerability exists in the message update and delete endpoints, which implement channel-level authorization but completely lack message ownership validation. While the frontend correctly implements ownership checks (showing edit/delete buttons only for message owners or admins), the backend APIs bypass these protections by only validating channel access permissions without verifying that the requesting user owns the target message. This creates a client-side security control bypass where attackers can directly call the APIs to modify other users' messages. This vulnerability is fixed in 0.6.19.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:L
Source: NVD (National Vulnerability Database)
Vulnerability Type
授权机制缺失
Source: NVD (National Vulnerability Database)
Vulnerability Title
Open WebUI 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Open WebUI是Open WebUI开源的一个可扩展、功能丰富、用户友好的自托管 WebUI。 Open WebUI 0.6.19之前版本存在安全漏洞，该漏洞源于频道消息管理系统中的IDOR，允许经过身份验证的用户修改或删除其具有读取访问权限的频道中的任何消息，消息更新和删除端点实现了频道级授权但完全缺乏消息所有权验证，后端API仅验证频道访问权限而未验证请求用户是否拥有目标消息，导致客户端安全控制绕过。
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

VendorProductAffected VersionsCPESubscribe
open-webuiopen-webui < 0.6.19 -

II. Public POCs for CVE-2026-44569

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III. Intelligence Information for CVE-2026-44569

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Vendor Advisories for CVE-2026-44569 (1)

Same Patch Batch · open-webui · 2026-05-15 · 59 CVEs total

CVE-2026-445519.1 CRITICALOpen WebUI: LDAP Empty Password Authentication Bypass
CVE-2026-456728.8 HIGHOpen WebUI: Jupyter code execution works despite `ENABLE_CODE_EXECUTION=false` — feature g
CVE-2026-453158.7 HIGHOpen WebUI: Stored XSS via attacker-controlled file extension in /api/v1/audio/transcripti
CVE-2026-445528.7 HIGHOpen WebUI: Redis Cache Keys tool_servers and terminal_servers Missing Instance Prefix Ena
CVE-2026-453318.5 HIGHOpen WebUI: Full SSRF Vulnerability in the RAG Web Search Feature
CVE-2026-454008.5 HIGHOpen WebUI: Server-Side Request Forgery (SSRF) bypass in `validate_url`
CVE-2026-454018.5 HIGHOpen WebUI: SSRF Bypass via HTTP Redirect Following in Web-Fetch and Image-Load Endpoints
CVE-2026-445708.3 HIGHOpen WebUI: Inconsistent authorization controls within memories API
CVE-2026-456658.1 HIGHOpen WebUI: Stored XSS in Banner Component via Improper Sanitization Order
CVE-2026-445548.1 HIGHOpen WebUI: Knowledge Base Destruction and RAG Poisoning via Unauthorized Collection Overw
CVE-2026-445538.1 HIGHOpen WebUI: Stale Admin Role in Socket.IO Session Pool Enables Post-Demotion Cross-User No
CVE-2026-454028.1 HIGHOpen WebUI: Cross-User File Access via Unchecked file_id in Folder Knowledge and Knowledge
CVE-2026-453018.1 HIGHOpen WebUI: Missing permission check in files API allows authenticated users to list, acce
CVE-2026-445658.1 HIGHOpen WebUI: Open WebUI Arbitrary File Write, Delete via Path Traversal
CVE-2026-456758.1 HIGHOpen WebUI: LDAP and OAuth First-User Race Condition Allows Multiple Admin Accounts
CVE-2026-456718.0 HIGHOpen WebUI: shared-chat branch ignores access_type, allowing unauthorized file deletion
CVE-2026-453387.7 HIGHOpen WebUI: SSRF via OAuth Profile Picture URL in _process_picture_url (oauth.py)
CVE-2026-453037.7 HIGHOpen WebUI: Stored XSS via the HTML renedering view
CVE-2026-445557.6 HIGHOpen WebUI: Base Model Routing Bypasses Access Control via Model Chaining
CVE-2026-453987.5 HIGHOpen WebUI: IDOR - Retrieval API Bypasses Knowledge Base Access Controls

Showing top 20 of 59 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: open-webui
Same vendor: open-webui
Same weakness: CWE-862

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