GitLab 18.7 < 19.1.8 / 19.2 < 19.2.6 / 19.3 < 19.3.2 (CVE-2026-85706)

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

include('compat.inc');

if (description)
{
  script_id(346267);
  script_version("1.1");
  script_set_attribute(attribute:"plugin_modification_date", value:"2026/09/16");

  script_cve_id("CVE-2026-85706");
  script_xref(name:"CISA-KNOWN-EXPLOITED", value:"2026/09/14");

  script_name(english:"GitLab 18.7 < 19.1.8 / 19.2 < 19.2.6 / 19.3 < 19.3.2 (CVE-2026-85706)");

  script_set_attribute(attribute:"synopsis", value:
"The version of GitLab installed on the remote host is affected by a vulnerability.");
  script_set_attribute(attribute:"description", value:
"The version of GitLab installed on the remote host is affected by a vulnerability, as follows:

  - GitLab has remediated an issue that, under certain conditions, an unauthenticated user could have read
    arbitrary files from the GitLab server due to improper path confinement and missing authentication
    enforcement in the repository commits API. (CVE-2026-85706)

  - GitLab has remediated an issue in GitLab CE/EE affecting all versions from 18.7 before 19.1.8, 19.2 before
    19.2.6, and 19.3 before 19.3.2 that, under certain conditions, an unauthenticated user could have read
    arbitrary files from the GitLab server due to improper path confinement and missing authentication
    enforcement in the repository commits API. (CVE-2026-85706)

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version
number.");
  # https://gitlab.com/gitlab-org/cves/-/blob/master/2026/CVE-2026-85706.json
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?06af873b");
  script_set_attribute(attribute:"see_also", value:"https://gitlab.com/gitlab-org/gitlab/-/work_items/627748");
  script_set_attribute(attribute:"see_also", value:"https://hackerone.com/reports/3909881");
  script_set_attribute(attribute:"solution", value:
"Upgrade to GitLab version 19.1.8, 19.2.6, 19.3.2 or later.");
  script_set_attribute(attribute:"agent", value:"unix");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:N");
  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:C/C:H/I:H/A:N");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:F/RL:O/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2026-85706");

  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:"2026/09/11");
  script_set_attribute(attribute:"patch_publication_date", value:"2026/09/12");
  script_set_attribute(attribute:"plugin_publication_date", value:"2026/09/16");

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

  script_category(ACT_GATHER_INFO);
  script_family(english:"CGI abuses");

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

  script_dependencies("gitlab_webui_detect.nbin", "gitlab_nix_installed.nbin");
  script_require_keys("installed_sw/GitLab");

  exit(0);
}

include('vcf.inc');

var app = 'GitLab';
var app_info = vcf::combined_get_app_info(app:app);

if (report_paranoia < 2 && max_index(app_info.parsed_version[0]) < 3 && app_info.version =~ "^19\.(1|2|3)$")
  if (!empty_or_null(app_info.port))
    audit(AUDIT_POTENTIAL_VULN, app, app_info.version, app_info.port);
  else
    audit(AUDIT_POTENTIAL_VULN, app, app_info.version);

var constraints = [
  { 'min_version' : '18.7', 'fixed_version' : '19.1.8' },
  { 'min_version' : '19.2', 'fixed_version' : '19.2.6' },
  { 'min_version' : '19.3', 'fixed_version' : '19.3.2' }
];

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