GHSA-7CJ5-V4PP-V632中危已审查

LibreNMS: Stored XSS via graph_descr admin config settings echoed without escaping to all authenticated users

OSV 1.4.0 · github-reviewed · 修改于 2026-08-19 05:17

发布时间

2026-08-19 05:17

GitHub 审查时间

2026-08-19 05:17

NVD 发布时间

—

源文件

advisories/github-reviewed/2026/08/GHSA-7cj5-v4pp-v632/GHSA-7cj5-v4pp-v632.json

公告说明

Summary

The graph_descr.<graphtype> family of settings is echoed verbatim without htmlspecialchars() in includes/html/pages/graphs.inc.php:194. Any admin can store a malicious HTML payload that executes in every authenticated user's browser viewing that graph type.

CVSS

CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N — 4.8 Medium

Details

// graphs.inc.php:194
echo LibrenmsConfig::get('graph_descr.' . $vars['type']);

PoC

PUT /settings/graph_descr.device_processor
{"value": "<img src=x onerror=\"alert('ADV-15')\">"}

GET /graphs?type=device_processor
→ <img src=x onerror="alert('ADV-15')">

Fix

echo htmlspecialchars(LibrenmsConfig::get('graph_descr.' . $vars['type']), ENT_QUOTES, 'UTF-8');

Prerequisite

Admin session to set the config value.

受影响的软件包

Packagist

librenms/librenms

标识信息

别名 / CVE

无

CWE

CWE-79

软件生态

Packagist

扩展资料

暂无扩展资料。

CVSS 评分

CVSS_V3

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

原始 OSV JSON

{
  "id": "GHSA-7cj5-v4pp-v632",
  "aliases": [],
  "details": "### Summary\nThe `graph_descr.<graphtype>` family of settings is echoed verbatim without `htmlspecialchars()` in `includes/html/pages/graphs.inc.php:194`. Any admin can store a malicious HTML payload that executes in every authenticated user's browser viewing that graph type.\n\n### CVSS\n`CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N` — **4.8 Medium**\n\n### Details\n```php\n// graphs.inc.php:194\necho LibrenmsConfig::get('graph_descr.' . $vars['type']);\n```\n\n### PoC\n```\nPUT /settings/graph_descr.device_processor\n{\"value\": \"<img src=x onerror=\\\"alert('ADV-15')\\\">\"}\n\nGET /graphs?type=device_processor\n→ <img src=x onerror=\"alert('ADV-15')\">\n```\n\n### Fix\n```php\necho htmlspecialchars(LibrenmsConfig::get('graph_descr.' . $vars['type']), ENT_QUOTES, 'UTF-8');\n```\n\n### Prerequisite\nAdmin session to set the config value.",
  "summary": "LibreNMS: Stored XSS via graph_descr admin config settings echoed without escaping to all authenticated users",
  "affected": [
    {
      "ranges": [
        {
          "type": "ECOSYSTEM",
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "26.7.0"
            }
          ]
        }
      ],
      "package": {
        "name": "librenms/librenms",
        "ecosystem": "Packagist"
      }
    }
  ],
  "modified": "2026-08-18T21:17:20Z",
  "severity": [
    {
      "type": "CVSS_V3",
      "score": "CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N"
    }
  ],
  "published": "2026-08-18T21:17:20Z",
  "references": [
    {
      "url": "https://github.com/librenms/librenms/security/advisories/GHSA-7cj5-v4pp-v632",
      "type": "WEB"
    },
    {
      "url": "https://github.com/librenms/librenms",
      "type": "PACKAGE"
    },
    {
      "url": "https://github.com/librenms/librenms/releases/tag/26.7.0",
      "type": "WEB"
    }
  ],
  "schema_version": "1.4.0",
  "database_specific": {
    "cwe_ids": [
      "CWE-79"
    ],
    "severity": "MODERATE",
    "github_reviewed": true,
    "nvd_published_at": null,
    "github_reviewed_at": "2026-08-18T21:17:20Z"
  }
}