DOM-based XSS vulnerability in search export link #1529

New Issue

MrUnknownDE · 2026-04-06T03:09:17+02:00

MrUnknownDE commented

2026-04-06 03:09:17 +02:00

Originally created by @jnovinger on 8/1/2025

Deployment Type

Self-hosted

NetBox Version

v4.3.5

Python Version

3.10

Steps to Reproduce

Navigate to a NetBox list view with search and export functionality
- Go to /dcim/devices/ or any other object list view
- Ensure you can see both the search box and "Export" button/link
Enter a malicious search query containing URL-breaking characters
- In the search box, enter: test&malicious=injected<script>alert('xss')</script>
- Press Enter or click search
Inspect the Export link
- Right-click on the "Export Current View" link
- Select "Inspect Element" or "Copy Link Address"
- Observe the href attribute contains unencoded malicious input
Verify the vulnerability
- The href should contain: ...&q=test&malicious=injected<script>alert('xss')</script>
- Notice the search parameter is not URL-encoded
- The &malicious=injected creates an additional URL parameter
- The <script> tags are present in raw form
Confirm exploitation potential
- Copy the malicious export URL
- Paste into browser address bar
- Depending on how the export endpoint processes the URL, the XSS payload could execute

Expected Behavior

User input in search parameters should be properly URL-encoded before being added to export links to prevent XSS vulnerabilities.

Observed Behavior

Raw user input is concatenated directly into the export link URL without encoding.

*Originally created by @jnovinger on 8/1/2025* ### Deployment Type Self-hosted ### NetBox Version v4.3.5 ### Python Version 3.10 ### Steps to Reproduce 1. **Navigate to a NetBox list view with search and export functionality** - Go to `/dcim/devices/` or any other object list view - Ensure you can see both the search box and "Export" button/link 2. **Enter a malicious search query containing URL-breaking characters** - In the search box, enter: `test&malicious=injected<script>alert('xss')</script>` - Press Enter or click search 3. **Inspect the Export link** - Right-click on the "Export Current View" link - Select "Inspect Element" or "Copy Link Address" - Observe the href attribute contains unencoded malicious input 4. **Verify the vulnerability** - The href should contain: `...&q=test&malicious=injected<script>alert('xss')</script>` - Notice the search parameter is not URL-encoded - The `&malicious=injected` creates an additional URL parameter - The `<script>` tags are present in raw form 5. **Confirm exploitation potential** - Copy the malicious export URL - Paste into browser address bar - Depending on how the export endpoint processes the URL, the XSS payload could execute ### Expected Behavior User input in search parameters should be properly URL-encoded before being added to export links to prevent XSS vulnerabilities. ### Observed Behavior Raw user input is concatenated directly into the export link URL without encoding.

MrUnknownDE closed this issue

2026-04-06 03:09:17 +02:00

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Branches Tags

main

21455-sql-indexes-audit

21357-register-model-actions

feature

20924-plugin-ui-components

21766-improve-test-coverage-for-sortable-table-columns

21157-export-template-public-models

21025-pre-render-config-contexts

21364-swagger

feature-ip-prefix-link

20911-dropdown-3

fix_module_substitution

21160-filterset

20911-dropdown-2

20044-elevation-stuck-lightmode

7604-filter-modifiers-v3

20660-script-load

19724-graphql

14884-script

19720-macaddress-interface-generic-relation

fix-19669-api-image-download

7604-filter-modifiers

19275-fixes-interface-bulk-edit

fix-17794-get_field_value_return_list

11507-show-aggregate-and-rir-on-api

9583-add_column_specific_search_field_to_tables

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Reference: github/netbox#1529