cfn-nag vs Promptfoo Code Scanning / GitHub Action: Side-by-Side Comparison (2026)
Features, pricing, ratings, and pros & cons — compared head-to-head.
cfn-nag is a free static application security testing tool. Promptfoo Code Scanning / GitHub Action is a free static application security testing tool by Promptfoo. Compare features, ratings, integrations, and community reviews side by side to find the best static application security testing fit for your security stack.
CST VerdictBased on our analysis of core features, integrations, here is our conclusion:
Platform engineers and DevOps teams building on AWS will find cfn-nag indispensable for catching CloudFormation misconfigurations before they hit production, particularly because it runs entirely in your CI/CD pipeline with zero cloud dependencies. The tool has 1,288 GitHub stars and catches real security gaps,IAM overpermissions, unencrypted storage, exposed secrets,that CSPM tools often flag only after deployment. Skip this if your infrastructure spans multiple cloud providers or you need policy-as-code enforcement with drift remediation; cfn-nag is template scanning only, not a compliance orchestration platform.
Promptfoo Code Scanning / GitHub Action
Development teams shipping LLM applications into production need Promptfoo Code Scanning because it catches prompt injection and indirect prompt injection attacks that static SAST tools simply don't know how to look for. The GitHub Action integrates directly into CI/CD without requiring separate infrastructure, making it free to run on every pull request across your entire codebase. Skip this if your LLM usage is limited to off-the-shelf chatbots with no custom prompts or agentic logic; the signal-to-noise ratio drops sharply when you're not actually building LLM features.
