PYSEC-2026-1724 Open WebUI Cross-Site Request Forgery (CSRF) Vulnerability

A vulnerability in open-webui/open-webui versions = 0.3.8 allows remote code execution by non-admin users via Cross-Site Request Forgery CSRF. The application uses cookies with the SameSite attribute set to lax for authentication and lacks CSRF tokens. This allows an attacker to craft a malicious...

PYSEC-2026-1739 Open WebUI Vulnerable to Cross-Site Request Forgery (CSRF)

In version v0.3.8 of open-webui/open-webui, sensitive actions such as deleting and resetting are performed using the GET method. This vulnerability allows an attacker to perform Cross-Site Request Forgery CSRF attacks, where an unaware user can unintentionally perform sensitive actions by simply...

PYSEC-2026-1743 Open WebUI has SSRF in /openai/models

The /openai/models endpoint in open-webui/open-webui version 0.3.8 is vulnerable to Server-Side Request Forgery SSRF. An attacker can change the OpenAI URL to any URL without checks, causing the endpoint to send a request to the specified URL and return the output. This vulnerability allows the...

PYSEC-2026-1720 Open WebUI Vulnerable to a Session Fixation Attack

A vulnerability in open-webui/open-webui version 0.3.8 allows an attacker with a user-level account to perform a session fixation attack. The session cookie for all users is set with the default SameSite=Lax and does not have the Secure flag enabled, allowing the session cookie to be sent over HT...

Open WebUI Allows Admin Deletion via API Endpoint

In open-webui/open-webui version v0.3.8, there is an improper privilege management vulnerability. The application allows an attacker, acting as an admin, to delete other administrators via the API endpoint http://0.0.0.0:8080/api/v1/users/uuidadministrator. This action is restricted by the user...

PYSEC-2026-1736 Open WebUI Vulnerable to Cross-Site Scripting (XSS) via Chat File Upload

A Stored Cross-Site Scripting XSS vulnerability exists in the chat file upload functionality of open-webui/open-webui version 0.3.8. An attacker can inject malicious content into a file, which, when accessed by a victim through a URL or shared chat, executes JavaScript in the victim's browser. Th...

PYSEC-2026-1740 Open WebUI Allows Admin Deletion via API Endpoint

In open-webui/open-webui version v0.3.8, there is an improper privilege management vulnerability. The application allows an attacker, acting as an admin, to delete other administrators via the API endpoint http://0.0.0.0:8080/api/v1/users/uuidadministrator. This action is restricted by the user...

PYSEC-2026-1742 Open WebUI Uncontrolled Resource Consumption vulnerability

A vulnerability in open-webui/open-webui v0.3.8 allows an unauthenticated attacker to sign up with excessively large text in the 'name' field, causing the Admin panel to become unresponsive. This prevents administrators from performing essential user management actions such as deleting, editing, ...

PYSEC-2026-1737 Open WebUI Allows Arbitrary File Reading and Deletion

An improper access control vulnerability in open-webui/open-webui v0.3.8 allows attackers to view and delete any files. The application does not verify whether the attacker is an administrator, allowing the attacker to directly call the GET /api/v1/files/ interface to retrieve information on all...

Open WebUI Vulnerable to Cross-Site Scripting (XSS) via Chat File Upload

A Stored Cross-Site Scripting XSS vulnerability exists in the chat file upload functionality of open-webui/open-webui version 0.3.8. An attacker can inject malicious content into a file, which, when accessed by a victim through a URL or shared chat, executes JavaScript in the victim's browser. Th...

Open WebUI Allows Arbitrary File Reading and Deletion

An improper access control vulnerability in open-webui/open-webui v0.3.8 allows attackers to view and delete any files. The application does not verify whether the attacker is an administrator, allowing the attacker to directly call the GET /api/v1/files/ interface to retrieve information on all...

PYSEC-2026-1733 Open WebUI Uncontrolled Resource Consumption vulnerability

In version v0.3.32 of open-webui/open-webui, the application allows users to submit large payloads in the email and password fields during the sign-in process due to the lack of character length validation on these inputs. This vulnerability can lead to a Denial of Service DoS condition when a us...

PYSEC-2026-1394 FastChat open redirect vulnerability

An open redirect vulnerability in lm-sys/fastchat Release v0.2.36 allows a remote unauthenticated attacker to redirect users to arbitrary websites via a specially crafted URL. This can be exploited for phishing attacks, malware distribution, and credential theft...

PYSEC-2026-1259 CodeChecker open redirect when URL contains multiple slashes after the product name

Summary --- CodeChecker versions up to 6.24.5 contain an open redirect vulnerability due to missing protections against multiple slashes after the product name in the URL's path segment. This results in bypassing protections against CVE-2021-28861, leading to the same open redirect pathway. Detai...

PYSEC-2026-1920 GHSL-2024-288: SickChill open redirect in login

SickChill is an automatic video library manager for TV shows. A user-controlled login endpoint's next parameter takes arbitrary content. Prior to commit c7128a8946c3701df95c285810eb75b2de18bf82, an authenticated attacker may use this to redirect the user to arbitrary destinations, leading to open...

PYSEC-2026-1721 open-webui allows writing and deleting arbitrary files

In version v0.3.8 of open-webui/open-webui, the endpoint /api/pipelines/upload is vulnerable to arbitrary file write and delete due to unsanitized file.filename concatenation with CACHEDIR. This vulnerability allows attackers to overwrite and delete system files, potentially leading to remote cod...

PYSEC-2026-1744 open-webui Insecure Direct Object Reference (IDOR) vulnerability

An Insecure Direct Object Reference IDOR vulnerability exists in open-webui/open-webui version v0.3.8. The vulnerability occurs in the API endpoint http://0.0.0.0:3000/api/v1/memories/id/update, where the decentralization design is flawed, allowing attackers to edit other users' memories without...

PYSEC-2026-1738 open-webui allows enumeration of file names and traversal of directories by observing the error messages

An information disclosure vulnerability exists in open-webui version 0.3.8. The vulnerability is related to the embedding model update feature under admin settings. When a user updates the model path, the system checks if the file exists and provides different error messages based on the existenc...

open-webui allows enumeration of file names and traversal of directories by observing the error messages

An information disclosure vulnerability exists in open-webui version 0.3.8. The vulnerability is related to the embedding model update feature under admin settings. When a user updates the model path, the system checks if the file exists and provides different error messages based on the existenc...

open-webui Insecure Direct Object Reference (IDOR) vulnerability

An Insecure Direct Object Reference IDOR vulnerability exists in open-webui/open-webui version v0.3.8. The vulnerability occurs in the API endpoint http://0.0.0.0:3000/api/v1/memories/id/update, where the decentralization design is flawed, allowing attackers to edit other users' memories without...