CVE-2026-3317
Reflected XSS in Navigate CMS '/blog' Allows Remote Code Execution
Publication date: 2026-04-21
Last updated on: 2026-04-21
Assigner: Spanish National Cybersecurity Institute, S.A. (INCIBE)
Description
Description
CVSS Scores
EPSS Scores
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Meta Information
Affected Vendors & Products
| Vendor | Product | Version / Range |
|---|---|---|
| navigate | cms | to 2.9.5 (exc) |
Helpful Resources
Exploitability
| CWE ID | Description |
|---|---|
| CWE-79 | The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users. |
Attack-Flow Graph
AI Powered Q&A
Can you explain this vulnerability to me?
CVE-2026-3317 is a Reflected Cross-Site Scripting (XSS) vulnerability in the Navigate Content Management System (CMS).
The vulnerability exists in the '/blog' endpoint because user input passed through certain query parameters is not properly sanitized.
This improper input validation causes unsafe HTML rendering, which allows a remote attacker to execute arbitrary JavaScript code in the victim's browser.
How can this vulnerability impact me? :
This vulnerability can allow a remote attacker to execute malicious JavaScript code in the browser of a user visiting the vulnerable '/blog' endpoint.
Such code execution can lead to theft of sensitive information, session hijacking, or other malicious actions performed on behalf of the victim.
How can this vulnerability be detected on my network or system? Can you suggest some commands?
This vulnerability occurs in the '/blog' endpoint of Navigate CMS versions prior to 2.9.6, where user input passed through specific query parameters is not properly sanitized, leading to reflected Cross-Site Scripting (XSS).
To detect this vulnerability on your system, you can test the '/blog' endpoint by injecting typical XSS payloads into query parameters and observing if the input is reflected unsanitized in the HTML response.
- Use curl or similar tools to send requests with XSS payloads, for example: curl -i "http://your-navigate-cms-site/blog?param=<script>alert(1)</script>"
- Check the HTTP response for the presence of the injected script tags or JavaScript code being reflected without proper encoding.
- Use web vulnerability scanners that support XSS detection targeting the '/blog' endpoint.
What immediate steps should I take to mitigate this vulnerability?
The vulnerability was fixed in Navigate CMS version 2.9.6. The immediate step is to upgrade your Navigate CMS installation to version 2.9.6 or later.
If upgrading immediately is not possible, consider implementing input validation and output encoding on the '/blog' endpoint to prevent unsafe HTML rendering.
Additionally, apply web application firewall (WAF) rules to detect and block typical XSS attack patterns targeting the vulnerable endpoint.
How does this vulnerability affect compliance with common standards and regulations (like GDPR, HIPAA)?:
The provided information does not specify how the Reflected Cross-Site Scripting (XSS) vulnerability in Navigate CMS affects compliance with common standards and regulations such as GDPR or HIPAA.