Python Library aiohttp < 3.14.0 Header Injection

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

include('compat.inc');

if (description)
{
  script_id(324957);
  script_version("1.2");
  script_set_attribute(attribute:"plugin_modification_date", value:"2026/07/06");

  script_cve_id("CVE-2026-50269");
  script_xref(name:"IAVA", value:"2026-A-0636");

  script_name(english:"Python Library aiohttp < 3.14.0 Header Injection");

  script_set_attribute(attribute:"synopsis", value:
"A Python library installed on the remote host is affected by a vulnerability.");
  script_set_attribute(attribute:"description", value:
"The version of the aiohttp Python library installed on the remote host is prior to 3.14.0. It is,
therefore, affected by a vulnerability:

  - Prior to 3.14.0, attacker-controlled input included into multipart/payload headers can be used to modify
    a request to inject additional headers or similar. In the unlikely situation that an application is passing
    user-controlled strings into MultipartWriter.append(headers=...) or Payload.headers, then an attacker may
    be able to modify the request to inject headers or change the contents of the request. (CVE-2026-50269)

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported
version number.");
  # https://github.com/aio-libs/aiohttp/security/advisories/GHSA-m6qw-4cw2-hm4m
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?a7a0488e");
  script_set_attribute(attribute:"solution", value:
"Upgrade to aiohttp version 3.14.0 or later.");
  script_set_attribute(attribute:"agent", value:"all");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:C");
  script_set_cvss_temporal_vector("CVSS2#E:U/RL:OF/RC:C");
  script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:U/RL:O/RC:C");
  script_set_attribute(attribute:"cvss4_vector", value:"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N");
  script_set_attribute(attribute:"cvss4_threat_vector", value:"CVSS:4.0/E:U");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2026-50269");

  script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"false");

  script_set_attribute(attribute:"vuln_publication_date", value:"2026/06/15");
  script_set_attribute(attribute:"patch_publication_date", value:"2026/06/15");
  script_set_attribute(attribute:"plugin_publication_date", value:"2026/07/03");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"asset_categories", value:"component");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:aiohttp:aiohttp");
  script_set_attribute(attribute:"stig_severity", value:"I");
  script_set_attribute(attribute:"thorough_tests", value:"true");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_family(english:"Misc.");

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

  script_dependencies("python_packages_installed_nix.nbin", "python_packages_win_installed.nbin");
  script_require_ports("Host/nix/Python/Packages/Enumerated", "Host/win/Python/Packages/Enumerated");

  exit(0);
}

include('python.inc');

var pkg = 'aiohttp';

var libs = python::get_package_info(pkg_name:pkg, cpe:"cpe:/a:aiohttp:aiohttp");

if (empty_or_null(libs))
  audit(AUDIT_NOT_INST, pkg);

vcf::check_all_backporting(app_info:libs);

var constraints = [
  { 'max_version' : '3.13.5', 'fixed_version' : '3.14.0' }
];

vcf::check_version_and_report(
  app_info:libs,
  constraints:constraints,
  severity:SECURITY_HOLE
);