LibreNMS has a Reflected XSS ('Cross-site Scripting') in librenms/includes/functions.php

Exploitation

No confirmed exploitation recorded. Patch Next marks exploitation only from CISA KEV.

CVSS

7.5 · CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:H/I:L/A:L

EPSS

• CVE-2024-50351: 0.43% estimated exploitation activity in the next 30 days; percentile 36.91 (FIRST EPSS, 2026-11-03). This is a model estimate, not proof of exploitation or customer exposure.

As published by the source; long descriptions are shortened.

Summary A Reflected Cross-Site Scripting (XSS) vulnerability in the "section" parameter of the "logs" tab of a device allows attackers to inject arbitrary JavaScript. This vulnerability results in the execution of malicious code when a user accesses the page with a malicious "section" parameter, potentially compromising their session and enabling unauthorized actions. The issue arises from a lack of sanitization in the "reportthis()" function. Details The "section" parameter of the "logs" tab is vulnerable to reflected XSS. An attacker can inject the following XSS payload into the "section" parameter: When the page is loaded with this malicious parameter, the script executes immediately. This vulnerability occurs due to the lack of sanitization in the "reportthis()" function. Other endpoints using this same function may also be vulnerable. The vulnerable sink is located here:…

Published by the source

15 Nov 2024, 15:34 UTC

Last modified by the source

10 Dec 2024, 23:36 UTC

Source last checked

26 Oct 2026, 14:29 UTC

1. Revision 1 · created · 26 Oct 2026

   Published from ghsa record GHSA-v7w9-63xh-6r3w

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# Patch Next advisory brief: CVE-2024-50351

Advisory: LibreNMS has a Reflected XSS ('Cross-site Scripting') in librenms/includes/functions.php
IDs: CVE-2024-50351, GHSA-v7w9-63xh-6r3w
Record: https://patchnext.com/advisories/cve-2024-50351 (revision 1, source checked 26 Oct 2026, 14:29 UTC)
Inventory: none attached. This brief comes from a public page and does not say whether any deployment is affected.
Severity: High (CVSS 7.5)
Exploitation: no confirmed exploitation recorded. Patch Next confirms exploitation only from CISA KEV.
Vendor response: Vendor fix available; fixed versions by package: librenms/librenms 24.10.0. A vendor fix does not mean a deployment is fixed.

## Affected components
- Packagist librenms/librenms: affected <= 24.9.1; fixed in 24.10.0

## Suggested inspection (read-only)
- Packagist librenms/librenms: check the installed version with your package manager.

## Supported action
Upgrade each affected component to a fixed version on its release line. For a transitive dependency, upgrade the parent package or add an override or constraint, then regenerate the lockfile. Redeploy every environment that ran an affected version.

## Required regression checks
- Run the test suite and a production build.
- Exercise the features that depend on librenms/librenms.
- Repeat the inspection and confirm that only fixed versions remain installed.

## Rollback considerations
- Keep the previous lockfile and deployment artifact. Rolling back reinstates the vulnerable version, so apply any documented mitigation while you fix forward.

## Unresolved questions
- Which deployments run an affected version?
- Exploitation status can change. Check again before lowering the priority.
- Mark the work resolved only after the fixed version is verified in production.

## Sources
- Verified: https://github.com/advisories/GHSA-v7w9-63xh-6r3w (GitHub-reviewed advisory GHSA-v7w9-63xh-6r3w lists affected ranges: Packagist librenms/librenms >=0 <=24.9.1)

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