AUTH-006high SeverityBroken Authentication & Access Controls
Session Cookies Configured with HttpOnly, Secure, and SameSite
Agents set cookies using basic document.cookie or simple response headers without security flags.
1-Click Fix Prompt for Cursor & Claude Code
Review my codebase for "Session Cookies Configured with HttpOnly, Secure, and SameSite" (AUTH-006). Issue: Agents set cookies using basic document.cookie or simple response headers without security flags. Remediation required: Configure auth cookies with httpOnly: true, secure: true, and sameSite: "lax" or "strict". Please: 1. Locate any occurrences of this issue across my repository. 2. Refactor the code to follow production standards without breaking existing functionality. 3. Provide a clear command or step to test and verify the fix.
Why AI Assistants Write This Bug
Agents set cookies using basic document.cookie or simple response headers without security flags.
AI code generation prioritizes immediate syntax execution over production edge cases. When an assistant hits an undefined variable or strict type error, it frequently takes the path of least resistance rather than implementing standard pre-launch security patterns.
Code Comparison
Common AI Code PatternVulnerable
// Vulnerable AI-generated pattern for: Session Cookies Configured with HttpOnly, Secure, and SameSite
// Insecure route handler trusting body user ID (IDOR risk)
export async function POST(req: Request) {
const { userId, newEmail } = await req.json();
// BUG: Any user can modify any other user record!
await db.user.update({ where: { id: userId }, data: { email: newEmail } });
return Response.json({ success: true });
}Launch-Ready Fix
// Production-ready fix for: Session Cookies Configured with HttpOnly, Secure, and SameSite
// Protected route deriving identity from verified session
export async function POST(req: Request) {
const session = await auth();
if (!session?.user?.id) {
return Response.json({ error: "Unauthorized" }, { status: 401 });
}
const { newEmail } = await req.json();
// Scoped strictly to authenticated session user ID
await db.user.update({ where: { id: session.user.id }, data: { email: newEmail } });
return Response.json({ success: true });
}Remediation & Verification Checklist
Remediation: Configure auth cookies with httpOnly: true, secure: true, and sameSite: "lax" or "strict".
- Search your codebase for pattern matching "Session Cookies Configured with HttpOnly, Secure, and SameSite".
- Apply the recommended remediation: Configure auth cookies with httpOnly: true, secure: true, and sameSite: "lax" or "strict".
- Run local build and test commands to ensure no regressions.
- Verify in your browser or with curl that the issue is resolved.
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