Atlassian Confluence 7.17.x / 7.19.x / 8.5.x / 8.9.x / 9.0.1 / 9.1.x / 9.2.x < 9.2.22 / 10.0.2 / 10.1.x / 10.2.x < 10.2.14 (CONFSERVER-104340)

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

include('compat.inc');

if (description)
{
  script_id(330086);
  script_version("1.2");
  script_set_attribute(attribute:"plugin_modification_date", value:"2026/07/29");

  script_cve_id("CVE-2026-21579");
  script_xref(name:"IAVA", value:"2026-A-0762");

  script_name(english:"Atlassian Confluence 7.17.x / 7.19.x / 8.5.x / 8.9.x / 9.0.1 / 9.1.x / 9.2.x < 9.2.22 / 10.0.2 / 10.1.x / 10.2.x < 10.2.14 (CONFSERVER-104340)");

  script_set_attribute(attribute:"synopsis", value:
"The remote Atlassian Confluence host is missing a security update.");
  script_set_attribute(attribute:"description", value:
"The version of Atlassian Confluence Server running on the remote host is affected by a vulnerability as referenced in
the CONFSERVER-104340 advisory.

  - This High severity Information Disclosure vulnerability was introduced in versions 7.17.0, 7.19.0, 8.5.0,
    8.9.0, 9.0.1, 9.1.0, 9.2.0, 10.0.2, 10.1.0, and 10.2.0 of Confluence Data Center. This Information Disclosure
    vulnerability, allows an unauthenticated attacker to view sensitive information via an Information Disclosure 
    vulnerability. (CVE-2026-21579)

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://jira.atlassian.com/browse/CONFSERVER-104340");
  # https://confluence.atlassian.com/security/security-bulletin-july-21-2026-1821999345.html
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?3f7c3b7c");
  script_set_attribute(attribute:"solution", value:
"Upgrade to Atlassian Confluence version 9.2.22, 10.2.14 or later.");
  script_set_attribute(attribute:"agent", value:"all");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:H/Au:N/C:C/I:N/A:N");
  script_set_cvss_temporal_vector("CVSS2#E:U/RL:OF/RC:C");
  script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N");
  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:P/PR:N/UI:N/VC:H/VI:N/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-2026-21579");

  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:"2026/07/09");
  script_set_attribute(attribute:"patch_publication_date", value:"2026/07/09");
  script_set_attribute(attribute:"plugin_publication_date", value:"2026/07/27");

  script_set_attribute(attribute:"plugin_type", value:"combined");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:atlassian:confluence");
  script_set_attribute(attribute:"stig_severity", value:"I");
  script_set_attribute(attribute:"thorough_tests", value:"true");
  script_set_attribute(attribute:"enable_cgi_scanning", 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("confluence_detect.nasl", "confluence_nix_installed.nbin", "confluence_win_installed.nbin");
  script_require_keys("installed_sw/Atlassian Confluence");

  exit(0);
}

include('vdf.inc');

# @tvdl-content
var vuln_data = {
  "metadata": {
    "spec_version": "1.0"
  },
  "checks": [
    {
      "product": {
        "name": "Atlassian Confluence",
        "type": "app"
      },
      "check_algorithm": "default",
      "constraints": [
        {
          "min_version": "7.17.0",
          "max_version": "7.17.999",
          "fixed_version": "9.2.22",
          "fixed_display": "9.2.22 / 10.2.14"
        },
        {
          "min_version": "7.19.0",
          "max_version": "7.19.999",
          "fixed_version": "9.2.22",
          "fixed_display": "9.2.22 / 10.2.14"
        },
        {
          "min_version": "8.5.0",
          "max_version": "8.5.999",
          "fixed_version": "9.2.22",
          "fixed_display": "9.2.22 / 10.2.14"
        },
        {
          "min_version": "8.9.0",
          "max_version": "8.9.999",
          "fixed_version": "9.2.22",
          "fixed_display": "9.2.22 / 10.2.14"
        },
        {
          "min_version": "9.0.1",
          "fixed_version": "9.2.22",
          "fixed_display": "9.2.22 / 10.2.14"
        },
        {
          "min_version": "10.0.2",
          "fixed_version": "10.2.14"
        }
      ]
    }
  ]
};

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