GHSA-86RG-8HC8-V82P

Vulnerability from github – Published: 2025-10-13 22:11 – Updated: 2025-10-14 00:55
VLAI?
Summary
LibreNMS is vulnerable to Reflected-XSS in `report_this` function
Details

Summary

Reflected-XSS in report_this function in librenms/includes/functions.php

Details

Recently, it was discovered that the report_this function had improper filtering (htmlentities function was incorrectly used in a href environment), which caused the project_issues parameter to trigger an XSS vulnerability.

The Vulnerable Sink: https://github.com/librenms/librenms/blob/master/includes/functions.php#L444

PoC

GET project_issues=javascript:alert(document.cookie)

Impact

XSS vulnerabilities allow attackers to execute malicious scripts in users' browsers, enabling unauthorized access to sensitive data, session hijacking, or malware distribution.

Suggestion

It is recommended to filter dangerous protocols, e.g. javascript:/file:.

Severity ?
5.5 (Medium)
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N/E:P
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{
  "affected": [
    {
      "database_specific": {
        "last_known_affected_version_range": "\u003c= 25.6.0"
      },
      "package": {
        "ecosystem": "Packagist",
        "name": "librenms/librenms"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "25.7.0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2025-62365"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-79"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2025-10-13T22:11:25Z",
    "nvd_published_at": "2025-10-13T22:15:34Z",
    "severity": "MODERATE"
  },
  "details": "### Summary\nReflected-XSS in `report_this` function in `librenms/includes/functions.php`\n\n### Details\nRecently, it was discovered that  the `report_this` function had improper filtering (`htmlentities` function was incorrectly used in a href environment), which caused the `project_issues` parameter to trigger an XSS vulnerability.\n\nThe Vulnerable Sink:\nhttps://github.com/librenms/librenms/blob/master/includes/functions.php#L444\n\n### PoC\nGET\n`project_issues=javascript:alert(document.cookie)`\n\n### Impact\nXSS vulnerabilities allow attackers to execute malicious scripts in users\u0027 browsers, enabling unauthorized access to sensitive data, session hijacking, or malware distribution.\n\n### Suggestion\nIt is recommended to filter dangerous protocols, e.g. `javascript:`/`file:`.",
  "id": "GHSA-86rg-8hc8-v82p",
  "modified": "2025-10-14T00:55:38Z",
  "published": "2025-10-13T22:11:25Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/librenms/librenms/security/advisories/GHSA-86rg-8hc8-v82p"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-62365"
    },
    {
      "type": "WEB",
      "url": "https://github.com/librenms/librenms/commit/30d3dd7e5f5e22a8c23c9db3ad90a731c005b008"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/librenms/librenms"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N/E:P",
      "type": "CVSS_V4"
    }
  ],
  "summary": "LibreNMS is vulnerable to Reflected-XSS in `report_this` function"
}


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  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
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  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



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