Security Audit for Cursor-Built Apps
Cursor's agent can write, refactor, and run code across your whole repository. That makes it productive and stack-agnostic, and it means security issues can land anywhere. We review the application Cursor helped you build and the development setup that shapes what it writes.
30-minute intro call · fixed-scope quote · human review, not scanner output. Read client case studies.
What we find most often in Cursor-built apps
Cursor works in whatever stack you choose, so findings vary. The recurring patterns come from fast agent edits that were accepted without a security read.
Authorization lost in refactors
Large multi-file agent edits can move or drop permission checks. An endpoint that was protected last week can quietly become open after a refactor that still passes your tests.
Hallucinated or look-alike packages
Models sometimes suggest packages that do not exist or have names close to popular ones. Attackers register those names, a technique known as slopsquatting.
Auto-run terminal commands
Agent modes that run terminal commands without confirmation can execute install scripts or commands influenced by untrusted content in issues, docs, or dependencies.
Untrusted rules and MCP configuration
Rules files such as `.cursorrules` and MCP server configs shape the agent's behaviour. A cloned repo or third-party MCP server can inject instructions or gain access to local credentials.
Secrets in context and history
Keys pasted into chat, kept in tracked config files, or added for a quick test often end up committed. Removing them later does not remove them from git history.
Plausible but incomplete security code
Generated validation, JWT handling, or webhook verification can look correct while skipping a critical step, such as checking a token's signature or expiry.
What a Cursor code audit covers
A fixed-scope review of your application code plus the AI development setup in your repository.
Checks you can run yourself
Start here before you book anything. If any of these fail or you are not sure how to check, that is the signal to get a second pair of eyes.
- Review your dependency list and confirm every package is one you recognise, with a real maintainer and download history.
- Check whether your agent is allowed to run terminal commands without confirmation, and restrict it for unfamiliar repos.
- Read every rules file and MCP server config in your repo and remove anything you did not add yourself.
- Scan git history for secrets and rotate any key that was ever committed.
- Pick your three most sensitive endpoints and confirm each checks both login and ownership.
Want a scored version? Take the free vibe code security check or work through the 25-point launch checklist.