CVE-2024-47872

XSS vulnerability in Gradio allows file uploads of malicious scripts.

• CVSS 6.9
• CWE-79
• Input Validation and Sanitization
• Remote

Gradio is an open-source Python package designed for quick prototyping. This vulnerability involves **Cross-Site Scripting (XSS)** on any Gradio server that allows file uploads. Authenticated users can upload files such as HTML, JavaScript, or SVG files containing malicious scripts. When other users download or view these files, the scripts will execute in their browser, allowing attackers to perform unauthorized actions or steal sensitive information from their sessions. This impacts any Gradio server that allows file uploads, particularly those using components that process or display user-uploaded files. Users are advised to upgrade to `gradio>=5` to address this issue. As a workaround, users can restrict the types of files that can be uploaded to the Gradio server by limiting uploads to non-executable file types such as images or text. Additionally, developers can implement server-side validation to sanitize uploaded files, ensuring that HTML, JavaScript, and SVG files are properly handled or rejected before being stored or displayed to users.

CVE

CVE-2024-47872

CWE

CWE-79

CVSS base score

6.9

Published

2024-10-10

OWASP

A03 Injection

Orthogonal defect classification

Checking

Code defect classification

Missing Check

Category

Input Validation and Sanitization

Subcategory

Cross-Site Scripting (XSS)

Accessibility scope

Remote

Impact

Data Theft

Affected component

Gradio

Fixed by upgrading

Yes

Solution

Upgrade to `gradio>=5` and implement server-side validation to sanitize uploaded files.

import gradio as gr

def process_file(file):
    return f"File {file.name} uploaded successfully."

iface = gr.Interface(
    fn=process_file,
    inputs=gr.File(label="Upload a file"),
    outputs="text"
)

iface.launch()

import gradio as gr

def process_file(file):
    if file.name.endswith(('.html', '.js', '.svg')):
        return "File type not allowed."
    return "File processed successfully."

iface = gr.Interface(
    fn=process_file,
    inputs=gr.File(label="Upload a file"),
    outputs="text"
)

iface.launch()

<script>alert('XSS Vulnerability Exploited!');</script>

@misc{vaitp:cve202447872,
  title        = {{XSS vulnerability in Gradio allows file uploads of malicious scripts.}},
  author       = {Bogaerts, Fr\'ed\'eric and Ivaki, Naghmeh and Fonseca, Jos\'e},
  year         = {2024},
  note         = {VAITP Python Vulnerability Dataset, entry CVE-2024-47872},
  howpublished = {\url{https://netpack.pt/vaitp/vulnerability/CVE-2024-47872/}}
}