SoFunction
Updated on 2025-04-10

Summary of 14 easily attacked code locations in Vue

1. Input input script

An attacker performs XSS (cross-site scripting attack) by inserting malicious scripts into a web page, and can avoid attacks through escape.

<template>
  <div>
    <input type="text" v-model="userInput" />
    <button @click="submit">submit</button>
    <p>{{ userInput }}</p>
  </div>
</template>

<script>
export default {
  data() {
    return {
      userInput: ''
    };
  },
  methods: {
    submit() {
      // Escape user input to prevent XSS attacks       = 
        .replace(/&/g, '&')
        .replace(/</g, '<')
        .replace(/>/g, '>')
        .replace(/"/g, '"')
        .replace(/'/g, ''');
    }
  }
};
</script>

2. v-html directive

This directive is used to render HTML content dynamically. If the user-provided content is passed directly to the v-html directive, it may lead to XSS (cross-site scripting) attacks.

<template>
  <div>
     <!-- The content entered by the user is shown here -->
     <div v-html="userInput"></div> 
  </div>
</template>

​​​​​​​<script>
export default {
  data() {
    return {
      userInput: '<script>alert("XSS Attack!");</script>'
    };
  }
};
</script>

3. Insufficient user input verification and filtering

Inadequate verification and filtering of user input may lead to attacks such as SQL injection, command injection, etc.

<template>
  <form @="submitForm">
    <input type="text" v-model="username" />
    <input type="password" v-model="password" />
    <button type="submit">Log in</button>
  </form>
</template>

<script>
export default {
  methods: {
    submitForm(event) {
      // Passing user input directly to database queries may lead to SQL injection attacks      fetch(`/login`, {
        method: 'POST',
        headers: {
          'Content-Type': 'application/json'
        },
        body: ({
          username: ,
          password: 
        })
      })
        .then(response => ())
        .then(data => {
          if () {
            // Login success logic          } else {
            // Login failure logic          }
        });
    }
  }
};
</script>

4. Unsafe file upload

If the control over file upload is not strict, it may lead to malicious file uploads, causing security vulnerabilities.

<template>
  <div>
    <input type="file" @change="onFileChange" />
    <button type="submit" @click="submitForm">Upload</button>
  </div>
</template>

​​​​​​​<script>
export default {
  methods: {
    onFileChange(event) {
      const file = [0];
      const formData = new FormData();
      ('file', file);
      this.$('/api/upload', formData, {
        headers: {
          'Content-Type': 'multipart/form-data'
        }
      }).then(response => {
        // Process the logic of successful upload      });
    },
    submitForm() {
      // Submit the form    }
  }
};
</script>

5. Unsafe storage

Store sensitive information (such as passwords) in plain text in local storage or cookies, which are prone to data breaches.

(‘password', ‘123456');

6. Unsafe API calls

Directly passing user input to the backend API may lead to attacks such as SQL injection, command injection, etc.

this.$(‘/api/data?' + );

7. Unencrypted communication

Use plain text to transmit sensitive data, such as passwords, credit card information, etc., and are easily attacked by man-in-the-middle.

this.$(‘/api/checkout', { creditCardNumber: ‘1234567890123456' });

8. Unsafe permission management

Not properly setting and verifying user permissions in the application can lead to unauthorized access and operations.

if ( === ‘admin') {
// Functions that allow administrators to access} else {
// Functions of other users}

9. Improper routing guard

Imperfect routing guards can cause user access control issues, allowing unauthorized users to access restricted pages.

const router = new VueRouter({
  routes: [
    {
      path: '/private',
      component: PrivateComponent,
      beforeEnter(to, from, next) {
        if ( === '/private') {
          // Check whether the user is logged in          if (!) {
            next('/login');
          } else {
            next();
          }
        }
      }
    },
    {
      path: '/login',
      component: LoginComponent
    }
  ]
});

export default new Vue({
  router,
  render: h => h(App)
}).$mount('#app');

10. Vulnerabilities in third-party libraries

Using third-party libraries with known vulnerabilities can introduce security risks.

import ThirdPartyComponent from ‘untrusted-component';

11. console information leak

Printing sensitive information, such as passwords, keys, etc. in the console or log may lead to information leakage.

(‘Password:', password);

12, vuex status management

If vuex is not managed properly, cross-site request forgery (CSRF) attacks may result.

// 
export default {
  async nuxtServerInit({ dispatch, commit }, { app, user }) {
    if (user) {
      const response = await fetch('/api/auth', {
        method: 'POST',
        headers: {
          'Content-Type': 'application/json'
        },
        body: (user)
      });
      const data = await ();

      if () {
        commit('SET_TOKEN', );
      }
    }
  }
};

// 
export default {
  namespaced: true,
  state: {
    token: ''
  },
  mutations: {
    SET_TOKEN(state, token) {
       = token;
    }
  },
  actions: {
    nuxtServerInit
  }
};

13. Unsafe URL jump and routing URL expose

If you use unsafe URL redirects or expose sensitive routing URLs in your application, it may lead to information leakage or be exploited for phishing attacks.

const router = new VueRouter({
  routes: [
    {
      path: '/private',
      component: PrivateComponent
    },
    {
      path: '/login',
      component: LoginComponent
    }
  ]
});

export default new Vue({
  router,
  render: h => h(App)
}).$mount('#app');

14. CORS (cross-domain resource sharing) is not configured correctly

Incorrect CORS configuration can lead to cross-domain attacks.

const app = new Vue({
  router,
  store,
  render: h => h(App)
}).$mount('#app');

​​​​​​​// Backend settingsapp.$ = '/api'; 
// or// app.$ = '/api';

The above is the detailed content of the 14 Vue code locations that are easily attacked. For more information about Vue's easily attacked code locations, please pay attention to my other related articles!