PT-2026-59151

A vulnerability was detected in lm-sys fastchat up to 0.2.36. Impacted is the function add text of the component Arena Side-by-Side View Handler. The manipulation results in incorrect control flow. The attack can be launched remotely. The exploit is now public and may be used. The root cause was...

GHSA-5H65-JX66-J7P5 FastChat has Denial of Service Through Blocking Event Loop in Model Workers (Incomplete Fix for ff66426)

A security vulnerability has been detected in lm-sys fastchat up to 0.2.36. This issue affects the function apigenerate of the component Worker API Endpoint. The manipulation leads to resource consumption. The attack can be initiated remotely. The exploit has been disclosed publicly and may be...

CVE-2026-6608 lm-sys fastchat Arena Side-by-Side View add_text control flow

A vulnerability was detected in lm-sys fastchat up to 0.2.36. Impacted is the function addtext of the component Arena Side-by-Side View Handler. The manipulation results in incorrect control flow. The attack can be launched remotely. The exploit is now public and may be used. The root cause was...

CVE-2026-6608 lm-sys fastchat Arena Side-by-Side View add_text control flow

A vulnerability was detected in lm-sys fastchat up to 0.2.36. Impacted is the function addtext of the component Arena Side-by-Side View Handler. The manipulation results in incorrect control flow. The attack can be launched remotely. The exploit is now public and may be used. The root cause was...

CVE-2026-6608

A vulnerability was detected in lm-sys fastchat up to 0.2.36. Impacted is the function addtext of the component Arena Side-by-Side View Handler. The manipulation results in incorrect control flow. The attack can be launched remotely. The exploit is now public and may be used. The root cause was...

CVE-2026-6608 lm-sys fastchat Arena Side-by-Side View add_text control flow

A vulnerability was detected in lm-sys fastchat up to 0.2.36. Impacted is the function addtext of the component Arena Side-by-Side View Handler. The manipulation results in incorrect control flow. The attack can be launched remotely. The exploit is now public and may be used. The root cause was...

CVE-2026-6607 lm-sys fastchat Worker API Endpoint api_generate resource consumption

A security vulnerability has been detected in lm-sys fastchat up to 0.2.36. This issue affects the function apigenerate of the component Worker API Endpoint. The manipulation leads to resource consumption. The attack can be initiated remotely. The exploit has been disclosed publicly and may be...

FastChat security vulnerability

FastChat is an open-source platform developed by LMSYS for training, deploying, and evaluating chatbots based on large language models. Versions of FastChat prior to 0.2.36 contain security vulnerabilities, which stem from incorrect operations on the apigenerate function within the Worker API...

PT-2026-33714

Name of the Vulnerable Software and Affected Versions lm-sys fastchat versions prior to 0.2.37 Description Remote Code Execution is possible in the Arena Side-by-Side View Handler component via the add text function. Manipulation of this function results in incorrect control flow, allowing an...

EUVD-2025-7033

Malicious code in bioql PyPI...

CVE-2024-10907

In lm-sys/fastchat Release v0.2.36, the server fails to handle excessive characters appended to the end of multipart boundaries. This flaw can be exploited by sending malformed multipart requests with arbitrary characters at the end of the boundary. Each extra character is processed in an infinit...

FastChat Server-Side Request Forgery vulnerability

A Server-Side Request Forgery SSRF vulnerability was identified in the lm-sys/fastchat web server, specifically in the affected version git 2c68a13. This vulnerability allows an attacker to access internal server resources and data that are otherwise inaccessible, such as AWS metadata credentials...

FastChat Server-Side Request Forgery vulnerability

A Server-Side Request Forgery SSRF vulnerability exists in lm-sys/fastchat version 0.2.36. The vulnerability is present in the /queue/join? endpoint, where insufficient validation of the path parameter allows an attacker to send crafted requests. This can lead to unauthorized access to internal...

FastChat Uncontrolled Resource Consumption vulnerability

In lm-sys/fastchat Release v0.2.36, the server fails to handle excessive characters appended to the end of multipart boundaries. This flaw can be exploited by sending malformed multipart requests with arbitrary characters at the end of the boundary. Each extra character is processed in an infinit...

CVE-2024-11603

A Server-Side Request Forgery SSRF vulnerability exists in lm-sys/fastchat version 0.2.36. The vulnerability is present in the /queue/join? endpoint, where insufficient validation of the path parameter allows an attacker to send crafted requests. This can lead to unauthorized access to internal...

CVE-2024-11603

A Server-Side Request Forgery SSRF vulnerability exists in lm-sys/fastchat version 0.2.36. The vulnerability is present in the /queue/join? endpoint, where insufficient validation of the path parameter allows an attacker to send crafted requests. This can lead to unauthorized access to internal...

CVE-2024-10907

In lm-sys/fastchat Release v0.2.36, the server fails to handle excessive characters appended to the end of multipart boundaries. This flaw can be exploited by sending malformed multipart requests with arbitrary characters at the end of the boundary. Each extra character is processed in an infinit...

CVE-2024-10907

CVE-2024-10907 affects lm-sys/fastchat Release v0.2.36. The server fails to handle excessive characters appended to the end of multipart boundaries, allowing an unauthenticated attacker to send malformed multipart requests. Each extra boundary character can be processed in an infinite loop, causi...

CVE-2024-10907 Denial of Service (DoS) via Multipart Boundary in lm-sys/fastchat

In lm-sys/fastchat Release v0.2.36, the server fails to handle excessive characters appended to the end of multipart boundaries. This flaw can be exploited by sending malformed multipart requests with arbitrary characters at the end of the boundary. Each extra character is processed in an infinit...

FastChat code-related vulnerabilities

FastChat is LMSYS Org's is an open platform for training, deploying, and evaluating chatbots based on large language models. A code issue vulnerability exists in FastChat that stems from a server-side request forgery vulnerability in the POST/workergeneratestream API endpoint that allows an...