CVE-2026-56400

open-webui before 0.3.14 contains a cross-origin resource sharing misconfiguration allowing arbitrary origins with alloworigins= and authenticated requests to the /api/v1/functions endpoint. Attackers can execute arbitrary code on the openwebui instance by crafting malicious cross-site requests...

CVE-2026-56398

Open WebUI before 0.9.5 contains a stored cross-site scripting vulnerability in the OAuth authentication flow where the picture claim URL MIME type is inferred from file extension rather than Content-Type header, allowing SVG files to bypass the profile image validator and be stored as data URIs...

CVE-2026-56400 open-webui - Remote Code Execution via CORS Misconfiguration and Session Validation

open-webui before 0.3.14 contains a cross-origin resource sharing misconfiguration allowing arbitrary origins with alloworigins= and authenticated requests to the /api/v1/functions endpoint. Attackers can execute arbitrary code on the openwebui instance by crafting malicious cross-site requests...

CVE-2026-56400 open-webui - Remote Code Execution via CORS Misconfiguration and Session Validation

open-webui before 0.3.14 contains a cross-origin resource sharing misconfiguration allowing arbitrary origins with alloworigins= and authenticated requests to the /api/v1/functions endpoint. Attackers can execute arbitrary code on the openwebui instance by crafting malicious cross-site requests...

CVE-2026-56400

open-webui before 0.3.14 is described as vulnerable to a cross-origin resource sharing misconfiguration that allows arbitrary origins (allow_origins=*) and authenticated requests to the /api/v1/functions endpoint. The result is remote code execution by crafting malicious cross-site requests from ...

CVE-2026-56400 open-webui - Remote Code Execution via CORS Misconfiguration and Session Validation

open-webui before 0.3.14 contains a cross-origin resource sharing misconfiguration allowing arbitrary origins with alloworigins= and authenticated requests to the /api/v1/functions endpoint. Attackers can execute arbitrary code on the openwebui instance by crafting malicious cross-site requests...

CVE-2026-56398 Open WebUI - Stored Cross-Site Scripting via OAuth Picture Claim SVG Data URI

Open WebUI before 0.9.5 contains a stored cross-site scripting vulnerability in the OAuth authentication flow where the picture claim URL MIME type is inferred from file extension rather than Content-Type header, allowing SVG files to bypass the profile image validator and be stored as data URIs...

CVE-2026-56398 Open WebUI - Stored Cross-Site Scripting via OAuth Picture Claim SVG Data URI

Open WebUI before 0.9.5 contains a stored cross-site scripting vulnerability in the OAuth authentication flow where the picture claim URL MIME type is inferred from file extension rather than Content-Type header, allowing SVG files to bypass the profile image validator and be stored as data URIs...

CVE-2026-56398 Open WebUI - Stored Cross-Site Scripting via OAuth Picture Claim SVG Data URI

Open WebUI before 0.9.5 contains a stored cross-site scripting vulnerability in the OAuth authentication flow where the picture claim URL MIME type is inferred from file extension rather than Content-Type header, allowing SVG files to bypass the profile image validator and be stored as data URIs...

CVE-2026-56398

Open WebUI before 0.9.5 is vulnerable to stored XSS via the OAuth picture claim SVG data URI. The code infers MIME type from the URL extension (e.g., .svg) and ignores the server-provided Content-Type, then stores data URI labelling it as image/svg+xml. The profile image validator is bypassed in ...

EUVD-2026-44628

Open WebUI before 0.9.5 contains a stored cross-site scripting vulnerability in the OAuth authentication flow where the picture claim URL MIME type is inferred from file extension rather than Content-Type header, allowing SVG files to bypass the profile image validator and be stored as data URIs...

CVE-2026-56398

Open WebUI before 0.9.5 contains a stored cross-site scripting vulnerability in the OAuth authentication flow where the picture claim URL MIME type is inferred from file extension rather than Content-Type header, allowing SVG files to bypass the profile image validator and be stored as data URIs...

CVE-2026-56400: Insufficient Session Expiration

open-webui before 0.3.14 contains a cross-origin resource sharing misconfiguration allowing arbitrary origins with alloworigins= and authenticated requests to the /api/v1/functions endpoint. Attackers can execute arbitrary code on the openwebui instance by crafting malicious cross-site requests...

CVE-2026-56398: Improper Input Validation

Open WebUI before 0.9.5 contains a stored cross-site scripting vulnerability in the OAuth authentication flow where the picture claim URL MIME type is inferred from file extension rather than Content-Type header, allowing SVG files to bypass the profile image validator and be stored as data URIs...

The vulnerability of the _process_picture_url() function in the backend/open_webui/utils/oauth.py file of the Open WebUI AI-based web interface allows a attacker to perform an SSRF attack.

The vulnerability of the processpictureurl function in the backend/openwebui/utils/oauth.py file of the Open WebUI artificial intelligence-based web interface is related to insufficient validation of incoming requests. Exploiting this vulnerability could allow a malicious actor to perform an SSRF...

PT-2026-60119

Open WebUI before 0.9.5 contains a stored cross-site scripting vulnerability in the OAuth authentication flow where the picture claim URL MIME type is inferred from file extension rather than Content-Type header, allowing SVG files to bypass the profile image validator and be stored as data URIs...

The vulnerability of the Open WebUI web interface, related to deficiencies in the authentication process, allows a perpetrator to gain access to read and modify data.

The vulnerability of the Open WebUI web interface is related to deficiencies in the authentication process. Exploiting this vulnerability can allow a malicious actor to gain access to and modify data...

The vulnerability of Ollama’s artificial intelligence-based web interface, Open WebUI, allows a hacker to gain unauthorized access to protected information.

The vulnerability of Ollama’s AI-based web interface, Open WebUI, is related to the lack of authentication during the processing of endpoints like /api/generate, /api/embed, /api/embeddings, and /api/show. Exploiting this vulnerability allows a malicious actor to gain unauthorized access to...

Open WebUI vulnerable to stored XSS via unescaped markdown token in MarkdownTokens.svelte leading to full account takeover and RCE via functions

SummaryA vulnerability in the way certain html tags in chat messages are rendered allows attackers to inject JavaScript code into a chat transcript. The JavaScript code will be executed in the user's browser every time that chat transcript is opened, allowing attackers to retrieve the user's acce...

Open WebUI vulnerable to Stored XSS via iFrame embeds in response messages

SummaryManually modifying chat history allows setting the embeds property on a response message, the content of which is loaded into an iFrame with a sandbox that has allow-scripts and allow-same-origin set, ignoring the "iframe Sandbox Allow Same Origin" configuration. This enables stored XSS on...