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...

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 访问控制错误漏洞

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 a security vulnerability related to access control. This vulnerability stemmed from the lack of authentication for the GET /api/v1/retrieval endpoint,...

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 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 audio transcription upload endpoint, which extracted the file extension from the...

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 跨站脚本漏洞

Open WebUI is an open-source, scalable, feature-rich, and user-friendly self-hosted WebUI. Versions of Open WebUI prior to 0.6.5 had a cross-site scripting vulnerability. This vulnerability stemmed from HTML rendering views that allowed script injection and execution, potentially leading to...

Open WebUI 访问控制错误漏洞

Open WebUI is an extensible, feature-rich, and user-friendly self-hosted WebUI under open source. Versions of Open WebUI prior to 0.3.16 contained a access control vulnerability. This vulnerability stemmed from the lack of permission checks for file-related API endpoints, which could allow any...

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 were caused by TOCTOU race conditions in the LDAP and OAuth authentication processes, which could allow...

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 model combination feature: the access control pipeline only verified users’ access...

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 0.1.124 contained security vulnerabilities. These vulnerabilities stemmed from APIs that did not properly verify whether the user had the authorized user role. When...

Open WebUI 代码问题漏洞

Open WebUI is an extensible, feature-rich, and user-friendly self-hosted WebUI that is open source. Versions of Open WebUI prior to 0.9.5 had code issues and vulnerabilities, which were caused by parsing differences between the urlparse and requests libraries, leading to SSRF bypasses...

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 0.9.3 contained security vulnerabilities. These vulnerabilities stemmed from the POST /api/v1/notes/id/pin endpoint performing write operations but only checking read...

Open WebUI 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 0.9.0 contained a cross-site scripting vulnerability. This vulnerability stemmed from stored-xss attacks, which could allow users with model creation permissions to...

Open WebUI 安全漏洞

Open WebUI is an open-source, scalable, feature-rich, and user-friendly self-hosted WebUI. Versions of Open WebUI prior to 0.9.0 contained security vulnerabilities. These vulnerabilities stemmed from the POST /api/v1/models/import endpoint, which allowed users with the workspace.models.import...

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 under open source. Versions of Open WebUI prior to 0.9.5 contained security vulnerabilities. These vulnerabilities stemmed from multiple endpoints accepting file IDs provided by users without verifying ownership,...

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 ...