---
id: CVE-2024-10912
aliases:
  - GHSA-79rp-v9rm-gxm8
  - PYSEC-2026-1395
title: FastChat Denial of Service vulnerability
summary: FastChat Denial of Service vulnerability
severity: high
cvss: 7.5
cvssVector: 'CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H'
vendor: fschat
product: fschat
ecosystem: pip
affected:
  - fschat <= 0.2.36
published: '2025-03-20'
updated: '2026-07-07'
source: OSV
sourceUrl: 'https://osv.dev/vulnerability/GHSA-79rp-v9rm-gxm8'
references:
  - url: 'https://nvd.nist.gov/vuln/detail/CVE-2024-10912'
  - url: 'https://github.com/lm-sys/FastChat'
  - url: 'https://huntr.com/bounties/52f335b8-1134-4d0f-acb4-efef516de414'
tags:
  - osv
  - pip
epss: 0.00624
epssPercentile: 0.4771
ingestedAt: '2026-07-08T18:25:46.835Z'
---

## Overview

A Denial of Service (DoS) vulnerability exists in the file upload feature of lm-sys/fastchat version 0.2.36. The vulnerability is due to improper handling of form-data with a large filename in the file upload request. An attacker can exploit this by sending a payload with an excessively large filename, causing the server to become overwhelmed and unavailable to legitimate users.

## Affected packages

- `fschat <= 0.2.36`

## Remediation

Refer to the advisory for the patched release.