CVE-2026-59213: Use of Cache Containing Sensitive Information

Open WebUI is an extensible, feature-rich, and user-friendly self-hosted AI platform. From 0.6.27 before 0.10.0, getallmodels handlers in routers/openai.py and routers/ollama.py passed a lambda to aiocache key instead of keybuilder, causing permission-filtered per-user model lists to share a stat...

CVE-2026-31982: URL Redirection to Untrusted Site

An Open Redirect vulnerability was discovered in the SAML Single Sign-On functionality due to insufficient validation of a user-controlled redirection parameter. An unauthenticated attacker can craft a request to the SAML sign-in endpoint and poison the cached SAML redirection for other users who...

PT-2026-56888

Name of the Vulnerable Software and Affected Versions Open WebUI versions 0.8.12 through 0.9.x Description An authenticated non-admin user with read access to an arena wrapper model can access a restricted underlying model. This occurs because task endpoints, such as...

CVE-2026-59219: Insufficient Session Expiration

Open WebUI is an extensible, feature-rich, and user-friendly self-hosted AI platform. From 0.9.0 before 0.10.0 with Redis configured, Socket.IO connect, user-join, join-channels, join-note, and the terminal websocket first-message authentication used decodetoken without the Redis-backed...

PT-2026-56830

Name of the Vulnerable Software and Affected Versions Open WebUI versions 0.9.0 through 0.9.x Description The execute automation function rehydrated automation owners without verifying if they remained active or retained features.automations permissions. Additionally, the check model access...

CVE-2026-12516: Undefined Security Weakness

The Fediverse Embeds WordPress plugin before 1.5.8 does not validate the destination of the server-side request performed by an unauthenticated media-proxying endpoint, allowing anonymous users to make the site fetch arbitrary URLs, including internal and private-network addresses, and read back...

PT-2026-56780

Access of resource using incompatible type 'type confusion' vulnerability in Samsung Open Source Escargot allows Pointer Manipulation. This issue affects Escargot: before 779f6bedf58f334dec64b0a51ebb724b4708b84a...

PT-2026-57044

Name of the Vulnerable Software and Affected Versions openrun affected versions not specified Description Restrictions on redirect URLs can be bypassed, leading to open redirect attacks. The issue occurs because the validation logic only verifies that the host and schema of the redirect URL match...

CVE-2026-59225: Missing Authorization

Open WebUI is an extensible, feature-rich, and user-friendly self-hosted AI platform. From 0.8.12 before 0.10.0, an authenticated non-admin user with read access to an arena wrapper model can reach a restricted underlying model through task endpoints such as /api/v1/tasks/moa/completions. The...

CVE-2026-43752: Unrestricted Upload of File with Dangerous Type

An authenticated administrator may be able to achieve arbitrary code execution on the host system by uploading a malicious file through the Open Source LLM setup feature in the Admin Console. This vulnerability has been addressed in FileMaker Server 26.0.1...

CVE-2026-59224: Improper Authentication

Open WebUI is an extensible, feature-rich, and user-friendly self-hosted AI platform. Prior to 0.10.0, backend/openwebui/routers/terminals.py built the wsterminal upstream URL from an unencoded sessionid and appended userid as a query parameter, allowing query injection to make the terminal backe...

CVE-2026-59218: Observable Timing Discrepancy

Open WebUI is an extensible, feature-rich, and user-friendly self-hosted AI platform. Prior to 0.10.0, the /api/v1/auths/signin endpoint looked users up by email and only ran bcrypt password verification when a credential existed, making registered-account attempts measurably slower than...

CVE-2026-59214: Improper Neutralization of Input During Web Page Generation

Open WebUI is an extensible, feature-rich, and user-friendly self-hosted AI platform. Prior to 0.10.0, Open WebUI runs client-side Python with Pyodide in a same-origin web worker, allowing stored chat payloads that use pyodide.http.pyfetch or the js module fetch and XMLHttpRequest APIs to issue...

CVE-2026-59212: Incorrect Authorization

Open WebUI is an extensible, feature-rich, and user-friendly self-hosted AI platform. From 0.9.6 before 0.10.0, verifyknowledgefileaccess only checked read access while file write and delete routes later trusted object-derived access through writable model meta.knowledge entries, allowing a user...

CVE-2026-58303: Stack-based Buffer Overflow

Stack-based buffer overflow vulnerability in Samsung Open Source Escargot allows Overflow Buffers. This issue affects Escargot: before b30b63fc63b403907d8137da1c65aaa4521fe74e...

PT-2026-56702

The Fediverse Embeds WordPress plugin before 1.5.8 does not validate the destination of the server-side request performed by an unauthenticated media-proxying endpoint, allowing anonymous users to make the site fetch arbitrary URLs, including internal and private-network addresses, and read back...

PT-2026-56828

Name of the Vulnerable Software and Affected Versions Open WebUI versions prior to 0.10.0 Description The '/api/v1/auths/signin' endpoint performs user lookups by email and only executes bcrypt password verification if a matching credential is found. This creates a timing difference where request...

PT-2026-56882

Name of the Vulnerable Software and Affected Versions Open WebUI versions prior to 0.10.0 Description Authenticated users can execute Python code or tools within another user's session. This occurs because the get event call function delivers execute:python and execute:tool Socket.IO events to a...

PT-2026-56884

Name of the Vulnerable Software and Affected Versions Open WebUI versions 0.9.0 through 0.9.x Description When Redis is configured, the authentication process for Socket.IO connect, user-join, join-channels, join-note, and the terminal websocket first-message uses the decode token function withou...

PT-2026-56883

Name of the Vulnerable Software and Affected Versions Open WebUI versions prior to 0.10.0 Description The file upload path fails to apply the necessary write-access checks when the metadata.knowledge id variable is provided. This allows users with read-only permissions to bypass the security...