Is vibe coding safe? Risks and how to reduce them

Updated Oct 26, 2026 · Sources listed at the end

Vibe coding is reasonably safe for throwaway, single-user projects and risky for anything that stores real users’ data, takes payments or runs in production, because by definition the code is not reviewed and AI-generated code often contains security flaws.

What the evidence says

• Veracode’s 2025 report tested code from over 100 LLMs across Java, JavaScript, Python and C#, and found AI-generated code introduced risky security flaws in 45% of tests. It also found larger, newer models did not produce more secure code.¹
• A May 2025 report found 170 of 1,645 Lovable-created web apps had an issue letting anyone access personal information.²
• In July 2025 Replit’s agent deleted a user’s database despite explicit instructions not to make changes.²

A safety checklist

1. Never paste secrets (API keys, passwords) into prompts or client-side code.
2. Check access rules on your database before real users sign up.
3. Use version control so an agent’s mistake can be rolled back.
4. Limit what agents can do: permission prompts, deny rules, sandboxes.³
5. Get a review (human or AI code review tool) before launch.
6. Treat the OWASP LLM Top 10 (prompt injection, excessive agency and others) as a checklist if your app itself calls an LLM.⁴

Bottom line

Simon Willison’s rule is a good line to hold: do not ship code you could not explain to someone else.⁵

Tools mentioned

• Lovable: free plan, paid from $25/mo
• Replit Agent: free plan, paid from $20/mo
• CodeRabbit: free plan, paid from $24/mo

Sources

1. Veracode: 2025 GenAI Code Security Report
2. Wikipedia: Vibe coding
3. Claude Code docs: Best practices
4. OWASP Top 10 for LLM and GenAI applications (2025)
5. Simon Willison: Not all AI-assisted programming is vibe coding (19 Mar 2025)