Windsurf
api
Cascade File Upload Without Validation
Critical file upload vulnerability after Cascade removed file validation. Users can upload arbitrary files including executables or malicious scripts. Files are stored in web-accessible directory and can be executed on the server.
This is a critical security issue requiring immediate attention.
Error Messages You Might See
Arbitrary file uploaded: malicious.exe
Path traversal attack: ../../../etc/passwd
Disk full: 500GB used by uploads
File executed on server
Common Causes
- Cascade removed file type validation - accepts any file extension
- Files saved directly to web root without sanitization
- Cascade removed file size limits, allowing disk exhaustion
- Filenames not sanitized - can contain path traversal sequences (../)
How to Fix It
Validate file types by checking MIME type and extension whitelist. Limit file size (e.g., 10MB). Sanitize filenames to prevent path traversal. Store files outside web root if possible. Set proper permissions so files can't be executed. Virus scan uploads if dealing with user files. Generate random filenames.
Real developers can help you.
Pratik
SWE with 15+ years of experience building and maintaining web apps and extensive BE infrastructure
Nam Tran
10 years as fullstack developer
Meïr Ankri
Full-stack developer specializing in React / Next.js / Node.js with 6+ years of experience. I've worked across various sectors including automotive (Reezocar/Société Générale), healthcare (Medical Link SaaS), and e-commerce (Glasman). I build web apps end-to-end, from architecture to production, with a focus on scalability, performance, and code quality. I also mentor junior developers and contribute to technical decisions and code reviews.
PawelPloszaj
I'm fronted developer with 10+ years of experience with big projects. I have small backend background too
Jared Hasson
Full time lead founding dev at a cyber security saas startup, with 10 yoe and a bachelor's in CS. Building & debugging software products is what I've spent my time on for forever
hanson1014
Full-stack developer experienced in fixing and deploying AI-generated apps from Lovable, Bolt.new, Cursor, and Replit. I specialize in debugging Supabase integration issues (auth flows, RLS policies, database connections), fixing broken deployments, resolving routing/blank screen problems, and cleaning up messy React/Vite codebases. I also build production apps with the Claude API and have shipped a Mac desktop dev tool (Nexterm from scratch. Based in Hong Kong, fast turnaround.
Taufan
I’m a product-focused engineer and tech leader who builds scalable systems and turns ideas into production-ready platforms.
Over the past years, I’ve worked across startups and fast-moving teams, leading backend architecture, improving system reliability, and shipping products used by thousands of users. My strength is not just writing code — but connecting product vision, technical execution, and business impact.
AUXLE
I am a Full Stack Developer experienced in building Websites, Web apps and Cross Platform Mobile Apps for Startups and Companies.
BurnHavoc
Been around fixing other peoples code for 20 years.
Jen Jacobsen
I’m a Full-Stack Developer with over 10 years of experience building modern web and mobile applications. I enjoy working across the full product lifecycle — turning ideas into real, well-built products that are intuitive for users and scalable for businesses.
I particularly enjoy building mobile apps, modern web platforms, and solving complex technical problems in a way that keeps systems clean, reliable, and easy to maintain.
You don't need to be technical. Just describe what's wrong and a verified developer will handle the rest.
Get Help