Security Audit Report
App Router
0
Routes
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Query Params
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Custom Headers
The Content-Security-Policy header is not set
The Content-Security-Policy header is not set. CSP provides defense-in-depth against XSS and data injection attacks by restricting resource loading sources.
Location
https://lesstodo.app
Remediation
Add a Content-Security-Policy header in next.config.js:
async headers() { return [{ source: '/(.*)', headers: [ { key: 'Content-Security-Policy', value: "default-src 'self'; script-src 'self'; style-src 'self' 'unsafe-inline';" }, ], }] }
The X-Content-Type-Options header is not set
The X-Content-Type-Options header is not set. This header prevents MIME-sniffing attacks by instructing browsers to respect the declared Content-Type. Modern browsers have largely mitigated MIME-sniffing risks.
Location
https://lesstodo.app
Remediation
Add an X-Content-Type-Options header in next.config.js:
async headers() { return [{ source: '/(.*)', headers: [ { key: 'X-Content-Type-Options', value: 'nosniff' }, ], }] }
The X-Frame-Options header is not set
The X-Frame-Options header is not set. This header prevents clickjacking attacks by controlling whether the page can be embedded in iframes. Note that CSP's frame-ancestors directive supersedes this header in modern browsers.
Location
https://lesstodo.app
Remediation
Add an X-Frame-Options header in next.config.js:
async headers() { return [{ source: '/(.*)', headers: [ { key: 'X-Frame-Options', value: 'DENY' }, ], }] }
Or use CSP's frame-ancestors directive for more flexibility.
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