CVE-2025-47931: Librenms/librenms Cross-Site Scripting Vulnerability

LOW
Advisory Identifier: GHSA-hxw5-9cc5-cmw5
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CWE-79
Published
Advisory Summary

CVE-2025-47931 is a LOW cross-site scripting vulnerability (CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')) affecting Librenms/librenms libraries in the Packagist ecosystem. The issue involves librenms stored cross-site scripting vulnerability in poller group name. Remediation is available by upgrading affected packages to version 25.5.0.

CVE-2025-47931 at a Glance

CVE Identifier CVE-2025-47931
GHSA Identifier GHSA-hxw5-9cc5-cmw5
Severity LOW
CVSS v3.1 Base Score N/A
CWE Classification CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Affected Product Librenms/librenms
Package Ecosystem Packagist
Published Date
Last Updated

How to Fix CVE-2025-47931

To remediate this vulnerability, upgrade all affected Librenms/librenms dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.

librenms/librenms fixed: 25.5.0 
Upgrade librenms/librenms to 25.5.0
Verify Direct and Transitive Dependencies

Run the following command in your project directory to verify that all resolved dependencies use the patched release: 

inspect dependencies for librenms/librenms

How to Check if You Are Affected

To determine whether your application is affected by CVE-2025-47931, inspect your project dependencies for Librenms/librenms:

inspect dependencies for librenms/librenms

Analyze the terminal output to locate any version of Librenms/librenms in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 25.5.0), your application is affected.

Note: Verify declared build manifests and deployed runtime container environments.

Technical Details

Vulnerability Mechanism & Technical Analysis

This vulnerability is classified under CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting'), where 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. In Librenms/librenms, software state validation or input boundaries are circumvented during processing. Review the official source advisory statement below for specific affected components, classes, and reproduction details.

Source Advisory Statement

### LibreNMS v25.4.0 suffers from Stored Cross-Site Scripting (XSS) Vulnerability in the 'group name' parameter of the 'http://localhost/poller/groups' form. This vulnerability allows attackers to inject malicious scripts into web pages viewed by other users. ## ---------------------------------POC----------------------------- Before Setting: Enable 'distributed_poller' in http://localhost/settings/poller/distributed 1. Attacker creates a new poller group and injects the payload in the 'group name' parameter ``` payload: <script>alert('XSS')</script> ``` 2. Victim navigates to the 'http://localhost/addhost' to add a new host 3. The payload is executed code sink: https://github.com/librenms/librenms/blob/25.4.0/includes/html/pages/addhost.inc.php#L284

CVE-2025-47931 Affected Librenms/librenms Versions

1 component(s)
Fixed Versions:
25.5.0
Product / Package Ecosystem Affected Versions Fixed Version
librenms/librenms
 Packagist
< 25.5.0
25.5.0

References

GitHub Advisory / Wiki ADVISORY
https://github.com/librenms/librenms/security/advisories/GHSA-hxw5-9cc5-cmw5
NVD — CVE-2025-47931 NVD
https://nvd.nist.gov/vuln/detail/CVE-2025-47931
Librenms/librenms Source Repository REPOSITORY
https://github.com/librenms/librenms/pull/17603
Security Fix Commit FIX COMMIT
https://github.com/librenms/librenms/commit/88fe1a7abdb500d9a2d4c45f9872df54c9ff8062
Librenms/librenms Source Repository REPOSITORY
https://github.com/librenms/librenms
Librenms/librenms Source Repository REPOSITORY
https://github.com/librenms/librenms/blob/25.4.0/includes/html/pages/addhost.inc.php#L284

Frequently Asked Questions

What is CVE-2025-47931?
CVE-2025-47931 is a security vulnerability in Librenms/librenms involving LibreNMS stored Cross-site Scripting vulnerability in poller group name under CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting').
Which Librenms/librenms versions are affected?
Affected versions include releases prior to 25.5.0 across affected packages: librenms/librenms.
What version fixes CVE-2025-47931?
Upgrading to 25.5.0 (or the latest patched release for your respective branch) resolves the vulnerability.
Is librenms/librenms affected?
Yes, librenms/librenms is affected in releases prior to 25.5.0. Upgrade your dependency to 25.5.0 or later.
What CWE is associated with CVE-2025-47931?
CVE-2025-47931 is classified under CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') (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.).
How can I check Packagist dependencies for CVE-2025-47931?
Run the dependency tree command: 'inspect dependencies for librenms/librenms'. This command lists direct and transitive dependencies in your build configuration so you can verify if a vulnerable version is resolved.
Machine-readable OSV JSON OSV v1.5 Schema
Normalized schema output
View Raw JSON 
{
  "schema_version" : "1.4.0",
  "id" : "GHSA-hxw5-9cc5-cmw5",
  "modified" : "2025-05-19T16:22:53Z",
  "published" : "2025-05-19T16:22:53Z",
  "aliases" : [ "CVE-2025-47931" ],
  "summary" : "LibreNMS stored Cross-site Scripting vulnerability in poller group name",
  "details" : "### LibreNMS v25.4.0 suffers from Stored Cross-Site Scripting (XSS) Vulnerability in the 'group name' parameter of the 'http://localhost/poller/groups' form. This vulnerability allows attackers to inject malicious scripts into web pages viewed by other users.\n\n## ---------------------------------POC-----------------------------\nBefore Setting: Enable 'distributed_poller' in http://localhost/settings/poller/distributed\n1. Attacker creates a new poller group and injects the payload in the 'group name' parameter\n```\npayload: <script>alert('XSS')</script>\n```\n2. Victim navigates to the 'http://localhost/addhost' to add a new host\n3. The payload is executed\n\ncode sink:\nhttps://github.com/librenms/librenms/blob/25.4.0/includes/html/pages/addhost.inc.php#L284",
  "severity" : [ {
    "type" : "CVSS_V4",
    "score" : "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N/E:P"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "Packagist",
      "name" : "librenms/librenms"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "25.5.0"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "WEB",
    "url" : "https://github.com/librenms/librenms/security/advisories/GHSA-hxw5-9cc5-cmw5"
  }, {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2025-47931"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/librenms/librenms/pull/17603"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/librenms/librenms/commit/88fe1a7abdb500d9a2d4c45f9872df54c9ff8062"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/librenms/librenms"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/librenms/librenms/blob/25.4.0/includes/html/pages/addhost.inc.php#L284"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-79" ],
    "severity" : "LOW",
    "github_reviewed" : true,
    "github_reviewed_at" : "2025-05-19T16:22:53Z",
    "nvd_published_at" : "2025-05-17T16:15:19Z"
  }
}