Langflow 1.x.x < 1.10.1 Code Injection

#%NASL_MIN_LEVEL 80900
##
# (C) Tenable, Inc.
##

include('compat.inc');

if (description)
{
  script_id(333371);
  script_version("1.2");
  script_set_attribute(attribute:"plugin_modification_date", value:"2026/08/10");

  script_cve_id("CVE-2026-9198");
  script_xref(name:"CISA-KNOWN-EXPLOITED", value:"2026/08/07");

  script_name(english:"Langflow 1.x.x < 1.10.1 Code Injection");

  script_set_attribute(attribute:"synopsis", value:
"An application installed on the remote host is affected by a code injection vulnerability.");
  script_set_attribute(attribute:"description", value:
"The version of Langflow installed on the remote host is 1.x.x prior to 1.10.1. It is,
therefore, affected by a code injection vulnerability:

  - IBM Langflow OSS 1.0.0 through 1.10.0 allows unauthenticated attackers to chain
    /api/v1/auto_login (mints SUPERUSER tokens to any network caller) with
    /api/v1/validate/code (executes user code via exec()) to achieve full RCE on default
    Langflow deployments. (CVE-2026-9198)

Note that Nessus has not tested for this issue but has instead relied only on the application's
self-reported version number.");
  script_set_attribute(attribute:"see_also", value:"https://www.ibm.com/support/pages/node/7278927");
  script_set_attribute(attribute:"solution", value:
"Upgrade to Langflow version 1.10.1 or later.");
  script_set_attribute(attribute:"agent", value:"all");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:C");
  script_set_cvss_temporal_vector("CVSS2#E:F/RL:OF/RC:C");
  script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:F/RL:O/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2026-9198");

  script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"true");
  script_cwe_id(94);

  script_set_attribute(attribute:"vuln_publication_date", value:"2026/07/02");
  script_set_attribute(attribute:"patch_publication_date", value:"2026/06/23");
  script_set_attribute(attribute:"plugin_publication_date", value:"2026/08/07");

  script_set_attribute(attribute:"plugin_type", value:"combined");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:langflow:langflow");
  script_set_attribute(attribute:"thorough_tests", value:"true");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_family(english:"Artificial Intelligence");

  script_copyright(english:"This script is Copyright (C) 2026 and is owned by Tenable, Inc. or an Affiliate thereof.");

  script_dependencies("python_langflow_detect.nasl", "langflow_web_detect.nbin");
  script_require_keys("installed_sw/Langflow");

  exit(0);
}

include('vdf.inc');

# @tvdl-content
var vuln_data = {
  'metadata': {'spec_version': '1.0'},
  'checks': [
    {
      'product': {'name': 'Langflow', 'type': 'app'},
      'check_algorithm': 'default',
      'constraints': [
        {
          'min_version': '1.0.0',
          'fixed_version': '1.10.1'
        }
      ]
    }
  ]
};

var result = vdf::check_and_report(vuln_data:vuln_data, severity:SECURITY_HOLE);
vdf::handle_check_and_report_errors(vdf_result:result);