Bolt
security
SQL Injection in Bolt AI-Generated Database Queries
Your Bolt.new application contains SQL injection vulnerabilities in its database queries. The AI-generated code concatenates user input directly into SQL strings instead of using parameterized queries, allowing attackers to manipulate your database.
An attacker can exploit this by entering specially crafted input into form fields, search boxes, or URL parameters. For example, entering ' OR 1=1 -- into a login form could bypass authentication entirely, or entering '; DROP TABLE users; -- could delete your entire users table.
This vulnerability is particularly dangerous because it can go completely unnoticed during normal use. The app works perfectly with legitimate input, but an attacker with basic SQL knowledge can read, modify, or delete any data in your database.
Error Messages You Might See
Error: syntax error at or near "'"
PrismaClientKnownRequestError: Raw query failed
ERROR: unterminated quoted string at or near "' OR"
Database query returned unexpected number of rows
Common Causes
- String concatenation in queries — Bolt generated code like `SELECT * FROM users WHERE id = '${userId}'` instead of using parameterized queries
- Raw SQL with template literals — Using Prisma's $queryRawUnsafe or Supabase's rpc with unsanitized user input
- Dynamic table or column names — Building queries with user-controlled table names or sort columns without whitelisting
- Search functionality with LIKE — Search queries built by concatenating user input: WHERE name LIKE '%${searchTerm}%'
- Filter parameters passed directly — URL query parameters inserted into WHERE clauses without sanitization
How to Fix It
- Use parameterized queries everywhere — Replace string concatenation with parameterized queries: prisma.$queryRaw`SELECT * FROM users WHERE id = ${userId}`
- Use Prisma's query builder — Let Prisma handle parameterization: prisma.user.findMany({ where: { name: { contains: searchTerm } } })
- Whitelist dynamic identifiers — If you need dynamic column names, validate them against an allowlist: const allowed = ['name', 'date', 'price']; if (!allowed.includes(sortBy)) throw new Error('Invalid sort')
- Use Supabase client safely — The Supabase JS client automatically parameterizes: supabase.from('users').select().eq('id', userId)
- Test with SQLi payloads — Enter ' OR 1=1 -- into your form fields and search boxes to check if they return unexpected results
- Add input validation — Validate and sanitize all user inputs with a library like zod or validator.js before they reach any query
Real developers can help you.
Matthew Jordan
I've been working at a large software company named Kainos for 2 years, and mainly specialise in Platform Engineering. I regularly enjoy working on software products outside of work, and I'm a huge fan of game development using Unity. I personally enjoy Python & C# in my spare time, but I also specialise in multiple different platform-related technologies from my day job.
David Olverson
Solo dev shipping production apps with AI-assisted development. I specialize in rescuing broken Lovable/Bolt/Cursor builds and taking them to production. 10+ apps shipped including SaaS CRMs, gaming platforms, real estate tools, and Discord bots. Stack: Next.js 16, TypeScript, Tailwind CSS, FastAPI, PostgreSQL, Prisma. I use Claude Code with 50+ custom skills for rapid delivery. Average turnaround: 2-4 weeks from broken prototype to production.
Basel Issmail
’m a Senior Full-Stack Developer and Tech Lead with experience designing and building scalable web platforms. I work across the full development lifecycle, from translating business requirements into technical architecture to delivering reliable production systems.
My work focuses on modern web technologies, including TypeScript, Angular, Node.js, and cloud-based architectures. I enjoy solving complex technical problems and helping teams turn product ideas and prototypes into working platforms that can grow and scale.
In addition to development, I often collaborate closely with product managers, business analysts, designers, and QA teams to ensure that solutions align with both technical and business goals.
I enjoy working with startups and product teams where I can contribute both as a hands-on engineer and as a technical partner in designing and delivering impactful software.
MFox
Full-stack professional senior engineer (15+years). Extensive experience in software development, qa, and IP networking.
Rudra Bhikadiya
I build and fix web apps across Next.js, Node.js, and DBs.
Comfortable jumping into messy code, broken APIs, and mysterious bugs.
If your project works in theory but not in reality, I help close that gap.
Franck Plazanet
I am a Strategic Engineering Leader with over 8 years of experience building high-availability enterprise systems and scaling high-performing technical teams. My focus is on bridging the gap between complex technology and business growth.
Core Expertise:
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Simon A.
I'm a backend developer building APIs, emulators, and interactive game systems. Professionally, I've developed Java/Spring reporting solutions, managed relational and NoSQL databases, and implemented CI/CD workflows.
ISHANTDEEP SINGH
Senior Software Engineer with 7+ years of experience in React, JavaScript, TypeScript, Next.js, and Node.js. I’ve also worked as a tech lead for startups, owning end-to-end technical execution including architecture, development, scaling, and delivery. I bring a strong mix of hands-on coding, product thinking, and technical leadership, and I’m comfortable building products from scratch as well as improving and scaling existing systems.
BurnHavoc
Been around fixing other peoples code for 20 years.
Sage Fulcher
Hey I'm Sage! Im a Boston area software engineer who grew up in South Florida. Ive worked at a ton of cool places like a telehealth kidney care startup that took part in a billion dollar merger (Cricket health/Interwell health), a boutique design agency where I got to work on a ton of exciting startups including a photography education app, a collegiate Esports league and more (Philosophie), a data analytics as a service startup in Cambridge (MA) as well as at Phillips and MIT Lincoln Lab where I designed and developed novel network security visualizations and analytics. I've been writing code and furiously devoted to using computers to make people’s lives easier for about 17 years. My degree is in making computers make pretty lights and sounds. Outside of work I love hip hop, the Celtics, professional wrestling, magic the gathering, photography, drumming, and guitars (both making and playing them)
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Get HelpFrequently Asked Questions
Is Prisma safe from SQL injection by default?
Prisma's query builder (findMany, create, etc.) is safe by default. However, Prisma's $queryRaw requires tagged template literals for safety. Using $queryRawUnsafe or string concatenation with $queryRaw bypasses protection.
How can I test my app for SQL injection?
Enter these payloads in text fields: ' OR 1=1 --, '; DROP TABLE test; --, and ' UNION SELECT null, null --. If the app behaves unexpectedly (returns all records, errors with SQL syntax), you have a vulnerability.