先看看示例
作者提供的示例，实际效果取决于你的输入和使用工具。
输入
审查登录接口代码，确认JWT是否存入localStorage，并给出改为httpOnly cookie的具体建议。
输出
预期交付：风险标记清单、改进建议、cookie标志与CSRF防护核对结论。（编辑说明，非实际运行结果）
方法说明
--- name: token-storage-security description: "Use when reviewing authentication implementation, setting up a new auth system, or evaluating whether the current token storage approach exposes the application to XSS-based token theft." metadata: category: security priority: high difficulty: intermediate estimatedTime: "30" source: frontendchecklist.io url: https://frontendchecklist.io/rules/security/token-storage-security --- # Store authentication tokens securely localStorage is accessible to any JavaScript running on the page. A single XSS vulnerability — including one in a third-party script — can exfiltrate all tokens silently. httpOnly cookies are completely invisible to JavaScript; even if an attacker executes arbitrary code on the page, they cannot read the cookie. This single architectural choice eliminates the most common token theft vector. ## Quick Reference - Store session tokens and JWTs in httpOnly cookies — not localStorage - localStorage is readable by any JavaScript on the page, including injected XSS code - Combine httpOnly with Secure and SameSite=Strict (or Lax) cookie flags - Use short-lived access tokens and rotate refresh tokens on each use - Protect every state-changing request with CSRF defenses, not cookie flags alone ## Check Check whether authentication tokens are stored in httpOnly cookies or in JavaScript-accessible storage like localStorage. Verify that POST, PUT, PATCH, and DELETE requests also require a CSRF token or an equivalent anti-forgery control. ## Fix Move token storage from localStorage/sessionStorage to httpOnly cookies set by the server, and ensure the cookies have Secure and SameSite flags. Add CSRF protection to every state-changing route that relies on browser-sent credentials. ## Explain Explain why localStorage is vulnerable to XSS token theft and how httpOnly cookies mitigate this attack vector. ## Code Review Review authentication flows, token storage calls, and API client code. Flag any use of localStorage.setItem, sessionStorage.setItem, or document.cookie for storing access tokens, JWTs, or session identifiers. Also flag credentialed mutations that lack a CSRF token, Origin check, or same-site enforcement. --- For full implementation details, code examples, and framework-specific guidance, see `references/rule.md`. Rule page: https://frontendchecklist.io/rules/security/token-storage-security