Streamlit

A critical vulnerability in Streamlit's st.file_uploader component allowed attackers to bypass file type restrictions and gain unauthorized access to cloud instances running Streamlit applications. This flaw enabled cloud account takeovers, financial data tampering, and potential manipulation of stock market dashboards, leading to cascading effects such as automated trading system responses to false signals and investor decisions based on fraudulent trends. The vulnerability was patched in version 1.43.2, but the exposure posed significant risks to financial institutions and other organizations relying on Streamlit for data applications.

Source: https://cybersecuritynews.com/streamlit-vulnerability/

TPRM report: https://www.rankiteo.com/company/streamlit

"id": "str222080925",
"linkid": "streamlit",
"type": "Vulnerability",
"date": "8/2025",
"severity": "100",
"impact": "5",
"explanation": "Attack threatening the organization's existence"

{'affected_entities': [{'industry': 'Technology',
                        'name': 'Streamlit',
                        'type': 'Open-source framework'}],
 'attack_vector': "Improper file type enforcement in Streamlit's file upload "
                  'widget',
 'date_detected': 'February 2025',
 'description': "A critical vulnerability in Streamlit's st.file_uploader "
                'component allows attackers to bypass file type restrictions '
                'and gain unauthorized access to cloud instances running '
                'Streamlit applications.',
 'impact': {'operational_impact': 'Potential manipulation of financial data '
                                  'and automated trading systems',
            'systems_affected': ['Cloud instances running Streamlit '
                                 'applications']},
 'initial_access_broker': {'entry_point': "Streamlit's st.file_uploader "
                                          'component'},
 'lessons_learned': 'Seemingly minor components can create significant '
                    'security risks, particularly when deployed in '
                    'misconfigured cloud environments.',
 'post_incident_analysis': {'corrective_actions': ['Streamlit released patch '
                                                   '1.43.2 with backend '
                                                   'validation'],
                            'root_causes': 'Improper file type enforcement in '
                                           "Streamlit's file upload widget"},
 'recommendations': ['Ensure cloud instances hosting web applications '
                     'implement proper network restrictions and access '
                     'controls'],
 'references': [{'source': 'Cato Networks'}],
 'response': {'enhanced_monitoring': ['Cato Networks updated its SASE Cloud '
                                      'Platform with enhanced threat '
                                      'prevention capabilities'],
              'remediation_measures': ['Streamlit released patch 1.43.2 with '
                                       'backend validation']},
 'title': 'Streamlit Vulnerability Enabling Cloud Account Takeover Attacks',
 'type': 'Cloud Account Takeover',
 'vulnerability_exploited': 'Client-side file type restrictions without '
                            'server-side validation'}