CVE-2026-45675

Open WebUI CVE-2026-45675 describes a TOCTOU race in first-user admin role assignment for LDAP and OAuth paths prior to version 0.9.0. The signup path was fixed to insert with a default role first and upgrade if only one user remains; LDAP and OAuth paths did not receive that fix. Attack scenario...

CVE-2026-45675 Open WebUI: LDAP and OAuth First-User Race Condition Allows Multiple Admin Accounts

Open WebUI is a self-hosted artificial intelligence platform designed to operate entirely offline. Prior to 0.9.0, the LDAP and OAuth authentication flows use a TOCTOU Time-of-Check-Time-of-Use pattern for first-user admin role assignment. The regular signup handler signuphandler in auths.py, lin...

Open WebUI 授权问题漏洞

Open WebUI is an extensible, feature-rich, and user-friendly self-hosted WebUI under open source. Versions of Open WebUI prior to 0.5.7 had an authorization issue vulnerability. This vulnerability stems from the ability for users to change access permissions during editing, potentially leading to...

Open WebUI 路径遍历漏洞

Open WebUI is an extensible, feature-rich, and user-friendly self-hosted WebUI under open source. Versions of Open WebUI prior to 0.6.10 had a path traversal vulnerability. This vulnerability arises when uploading audio files, where the file name originates from the original HTTP upload request a...

Open WebUI 安全漏洞

Open WebUI is an extensible, feature-rich, and user-friendly self-hosted WebUI based on the open-source Open WebUI framework. Versions of Open WebUI prior to 0.9.0 contained security vulnerabilities. These vulnerabilities stemmed from the ydoc:document:update Socket.IO event handler, which checke...

Open WebUI 跨站脚本漏洞

Open WebUI is an extensible, feature-rich, and user-friendly self-hosted WebUI under open source. Versions of Open WebUI prior to 0.8.0 had a cross-site scripting vulnerability. This vulnerability stemmed from the profileimageurl field in the user profile update form accepting arbitrary data: URI...

Open WebUI 安全漏洞

Open WebUI is an extensible, feature-rich, and user-friendly self-hosted WebUI under open source. Versions of Open WebUI prior to 0.9.3 contained security vulnerabilities. These vulnerabilities stemmed from the POST /api/v1/notes/id/pin endpoint performing write operations but only checking read...

Open WebUI 代码问题漏洞

Open WebUI is an extensible, feature-rich, and user-friendly self-hosted WebUI under open source. Versions of Open WebUI prior to 0.9.5 had code vulnerabilities. These vulnerabilities stemmed from the validateurl function, which only verified the initial URL without verifying the redirection...

Open WebUI 跨站脚本漏洞

Open WebUI is an extensible, feature-rich, and user-friendly self-hosted WebUI that is open source. Versions of Open WebUI prior to 0.9.3 had a cross-site scripting vulnerability. This vulnerability stemmed from the XLSX.utils.sheettohtml function, which was rendered using @html excelHtml without...

Open WebUI 安全漏洞

Open WebUI is an extensible, feature-rich, and user-friendly self-hosted WebUI that is open source. Versions of Open WebUI prior to 0.9.0 contained security vulnerabilities. These vulnerabilities stemmed from the /api/generate, /api/embed, /api/embeddings, and /api/show endpoints, which accepted...

Open WebUI 安全漏洞

Open WebUI is an extensible, feature-rich, and user-friendly self-hosted WebUI under open source. Versions of Open WebUI prior to 0.9.5 contained security vulnerabilities. These vulnerabilities stemmed from the fact that the “fix” or “unfix” operations were write operations, but only read...

Open WebUI 安全漏洞

Open WebUI is an extensible, feature-rich, and user-friendly self-hosted WebUI under open source. Versions of Open WebUI prior to 0.8.11 contained a security vulnerability. This vulnerability stemmed from the lack of authorization checks on the API endpoint/api/v1/notes/noteid, allowing...

Open WebUI 安全漏洞

Open WebUI is an extensible, feature-rich, and user-friendly self-hosted WebUI under open source. Versions of Open WebUI prior to 0.9.0 contained security vulnerabilities. These vulnerabilities stemmed from the router not calling filterallowedaccessgrants during path creation or updates...

Open WebUI 安全漏洞

Open WebUI is an extensible, feature-rich, and user-friendly self-hosted WebUI under open source. Versions of Open WebUI prior to 0.9.0 contained a security vulnerability. This vulnerability stemmed from the unconditional authorization check for the DELETE /api/v1/files/id endpoint, allowing...

Open WebUI 信息泄露漏洞

Open WebUI is an extensible, feature-rich, and user-friendly self-hosted WebUI under open source. Versions of Open WebUI prior to 0.8.9 contained a vulnerability related to information leakage. This vulnerability occurred when non-administrator users logged in, causing the application to send...

Open WebUI 安全漏洞

Open WebUI is an extensible, feature-rich, and user-friendly self-hosted WebUI under open source. Versions of Open WebUI prior to 0.6.31 contained security vulnerabilities, which were caused by cross-site scripting vulnerabilities in the SVG renderer implementation...

Open WebUI 安全漏洞

Open WebUI is an extensible, feature-rich, and user-friendly self-hosted WebUI under open source. Versions of Open WebUI prior to 0.8.12 contained a security vulnerability. This vulnerability stemmed from the lack of enforcement of the ENABLECODEEXECUTION configuration for the...

Open WebUI 安全漏洞

Open WebUI is an extensible, feature-rich, and user-friendly self-hosted WebUI under open source. Versions of Open WebUI prior to 0.9.0 contained security vulnerabilities. These vulnerabilities stemmed from the ability for users to continue a conversation with another user through...

Open WebUI 授权问题漏洞

Open WebUI is an extensible, feature-rich, and user-friendly self-hosted WebUI based on the Open WebUI open source project. Versions of Open WebUI prior to 0.9.0 had an authorization vulnerability. This vulnerability stemmed from the LDAP authentication endpoint failing to verify that the submitt...

Open WebUI 安全漏洞

Open WebUI is an extensible, feature-rich, and user-friendly self-hosted WebUI that is open source. Versions of Open WebUI prior to 0.9.0 contained security vulnerabilities. These vulnerabilities stemmed from FolderForm using modelconfig = ConfigDictextra=allow, which allowed arbitrary fields to ...