Lucene search
K
Catalog
Vendors
Products
Timeline
Vulnerabilities
Sources
Documentation
Blog
Glossary
FAQ
Brand assets
Assessment
Agents dashboard
Agent Scanning
API Scanning
Assessment API
Alerts
Email notifications
Webhook notifications
Alerts API
SBOM package analysis
API Reference
Support
Settings
Sign in

CVE-2025-54121 Starlette has possible denial-of-service vector when parsing large files in multipart forms

🗓️ 21 Jul 2025 20:06:03Reported by GoogleType 
osv
 osv🔗 osv.dev👁 3 Views

Starlette versions 0.47.1 and below block main thread during large file uploads, fixed in 0.47.2.

Related
Refs
ReporterTitlePublishedViews
Family
IBM Security Bulletins		Security Bulletin: IBM InfoSphere Optim Archive Viewer is affected by a vulnerability in Starlette (CVE-2025-54121)
26 Mar 202611:56
–ibm
IBM Security Bulletins		Security Bulletin: Multiple vulnerabilities in IBM watsonx Orchestrate Developer Edition
17 Dec 202509:51
–ibm
IBM Security Bulletins		Security Bulletin: Multiple vulnerabilities in IBM Security QRadar EDR Software
27 Nov 202512:09
–ibm
IBM Security Bulletins		Security Bulletin: Astronomer with IBM is vulnerable to event thread locking due to the starlette package (CVE-2025-54121)
20 Nov 202514:30
–ibm
IBM Security Bulletins		Security Bulletin: Multiple Vulnerabilities in IBM watsonx Code Assistant On Prem
28 Aug 202507:22
–ibm
IBM Security Bulletins		Security Bulletin: Multiple Vulnerabilities in IBM Concert Software.
20 Nov 202504:03
–ibm
IBM Security Bulletins		Security Bulletin: Multiple Vulnerabilities in IBM Concert Software.
21 Jan 202605:14
–ibm
IBM Security Bulletins		Security Bulletin: Multiple Vulnerabilities in IBM watsonx Code Assistant On Prem
28 Aug 202507:21
–ibm
IBM Security Bulletins		Security Bulletin: Multiple vulnerabilities in IBM Business Automation Workflow Machine Learning Server are addressed with 24.0.0-IF007
7 Nov 202517:54
–ibm
IBM Security Bulletins		Security Bulletin: There are multiple vulnerabilities that can affect IBM Fusion
19 Dec 202520:44
–ibm
Rows per page

Data

Build on a solid foundation with Vulners data

We provide the essential building blocks for cybersecurity solutions with comprehensive, structured, and constantly updated vulnerability and exploits data

Api

Power your application with Vulners API

The Vulners REST API offers reliable, high-performance access to vulnerability intelligence, with 99.9% SLA uptime and CDN-backed data delivery for seamless global access

App

Assess and manage vulnerabilities with Vulners tools

Built on top of Vulners' database and SDK, end-user solutions give security professionals and developers lightweight and powerful tools for vulnerability remediation

Book a live demo
10 Apr 2026 05:29Current
7.2High risk
Vulners AI Score7.2
CVSS 3.15.3
EPSS0.0025
starlette frameworkasgi toolkitfile upload vulnerabilitymain thread blockageversion fix
3