Python Library yt-dlp < 2026.6.9 Multiple Vulnerabilities

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

include('compat.inc');

if (description)
{
  script_id(321527);
  script_version("1.4");
  script_set_attribute(attribute:"plugin_modification_date", value:"2026/07/03");

  script_cve_id("CVE-2026-50023", "CVE-2026-50574");
  script_xref(name:"IAVB", value:"2026-B-0168");

  script_name(english:"Python Library yt-dlp < 2026.6.9 Multiple Vulnerabilities");

  script_set_attribute(attribute:"synopsis", value:
"A Python library installed on the remote host is affected by multiple vulnerabilities.");
  script_set_attribute(attribute:"description", value:
"The detected version of the yt-dlp Python package is prior to 2026.6.9. It is, therefore, affected by multiple
vulnerabilities:

  - A vulnerability exists in yt-dlp that allows a remote attacker to write arbitrary OS-shortcut files (such
    as .desktop, .url, .webloc) to the user's filesystem, bypassing the remediation for CVE-2024-38519.
    (CVE-2026-50023)

  - If aria2c is used as an external downloader for a fragmented manifest format (such as an HLS/DASH stream),
    yt-dlp passes insufficiently sanitized input to aria2c that allows an attacker to perform an arbitrary file
    write. On Windows platforms, this can lead to immediate arbitrary code execution. On non-Windows platforms,
    this can lead to arbitrary code execution upon the next invocation of yt-dlp. (CVE-2026-50574)

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported
version number.");
  script_set_attribute(attribute:"see_also", value:"https://advisories.gitlab.com/pypi/yt-dlp/CVE-2026-50023/");
  script_set_attribute(attribute:"see_also", value:"https://advisories.gitlab.com/pypi/yt-dlp/CVE-2026-50574/");
  script_set_attribute(attribute:"solution", value:
"Upgrade to yt-dlp version 2026.6.9 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:POC/RL:OF/RC:C");
  script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:P/RL:O/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2026-50574");

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

  script_set_attribute(attribute:"vuln_publication_date", value:"2026/06/16");
  script_set_attribute(attribute:"patch_publication_date", value:"2026/06/10");
  script_set_attribute(attribute:"plugin_publication_date", value:"2026/06/19");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"asset_categories", value:"component");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:yt-dlp_project:yt-dlp");
  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 = 'yt-dlp';

var libs = python::get_package_info(pkg_name:pkg, cpe:"cpe:/a:yt-dlp_project:yt-dlp");

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

vcf::check_all_backporting(app_info:libs);

var constraints = [
  { 'fixed_version' : '2026.6.9' }
];

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