Linux Distros Unpatched Vulnerability : CVE-2026-4800

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

include('compat.inc');

if (description)
{
  script_id(304625);
  script_version("1.30");
  script_set_attribute(attribute:"plugin_modification_date", value:"2026/06/11");

  script_cve_id("CVE-2026-4800");

  script_name(english:"Linux Distros Unpatched Vulnerability : CVE-2026-4800");

  script_set_attribute(attribute:"synopsis", value:
"The Linux/Unix host has one or more packages installed with a vulnerability that the vendor indicates will not be
patched.");
  script_set_attribute(attribute:"description", value:
"The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied
patch available.

  - Impact: The fix for CVE-2021-23337 (https://github.com/advisories/GHSA-35jh-r3h4-6jhm) added validation
    for the variable option in _.template but did not apply the same validation to options.imports key names.
    Both paths flow into the same Function() constructor sink. When an application passes untrusted input as
    options.imports key names, an attacker can inject default-parameter expressions that execute arbitrary
    code at template compilation time. Additionally, _.template uses assignInWith to merge imports, which
    enumerates inherited properties via for..in. If Object.prototype has been polluted by any other vector,
    the polluted keys are copied into the imports object and passed to Function(). Patches: Users should
    upgrade to version 4.18.0. Workarounds: Do not pass untrusted input as key names in options.imports. Only
    use developer-controlled, static key names. (CVE-2026-4800)

Note that Nessus relies on the presence of the package as reported by the vendor.");
  script_set_attribute(attribute:"see_also", value:"https://access.redhat.com/security/cve/cve-2026-4800");
  script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/CVE-2026-4800");
  script_set_attribute(attribute:"solution", value:
"There is no known solution at this time.");
  script_set_attribute(attribute:"agent", value:"unix");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:P");
  script_set_cvss_temporal_vector("CVSS2#E:POC/RL:U/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:P/RL:U/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2026-4800");

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

  script_set_attribute(attribute:"vuln_publication_date", value:"2026/03/31");
  script_set_attribute(attribute:"plugin_publication_date", value:"2026/04/02");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:centos:centos:8");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:debian:debian_linux:11.0");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:debian:debian_linux:12.0");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:debian:debian_linux:13.0");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:redhat:enterprise_linux:10");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:redhat:enterprise_linux:8");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:redhat:enterprise_linux:9");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:cockpit");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:cockpit-bridge");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:cockpit-dashboard");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:cockpit-doc");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:cockpit-files");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:cockpit-machines");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:cockpit-packagekit");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:cockpit-pcp");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:cockpit-podman");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:cockpit-storaged");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:cockpit-system");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:cockpit-ws");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:cockpit-ws-selinux");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:gjs");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:gjs-devel");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:librados-devel");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:librados2");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:libradospp-devel");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:librbd-devel");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:librbd1");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:pcs");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:pcs-snmp");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:rhsm-icons");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:subscription-manager-cockpit");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:node-lodash");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:cockpit");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:cockpit-bridge");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:cockpit-dashboard");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:cockpit-doc");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:cockpit-files");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:cockpit-machines");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:cockpit-packagekit");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:cockpit-pcp");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:cockpit-podman");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:cockpit-storaged");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:cockpit-system");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:cockpit-ws");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:cockpit-ws-selinux");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:gjs");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:gjs-devel");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:librados-devel");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:librados2");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:libradospp-devel");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:librbd-devel");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:librbd1");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:pcs");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:pcs-snmp");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:rhsm-icons");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:subscription-manager-cockpit");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  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("ssh_get_info2.nasl", "set_linux_os_id.nasl");
  script_require_keys("Host/cpu", "Host/local_checks_enabled", "global_settings/vendor_unpatched", "Host/OS/identifier");
  script_require_ports("Host/OS/CentOS Linux-8", "Host/OS/Debian Linux-11", "Host/OS/Debian Linux-12", "Host/OS/Debian Linux-13", "Host/OS/Red Hat Enterprise Linux-10", "Host/OS/Red Hat Enterprise Linux-8", "Host/OS/Red Hat Enterprise Linux-9");

  exit(0);
}

if (!get_kb_item("global_settings/vendor_unpatched")) exit(0, "Unpatched Vulnerabilities Detection not active.");
if (!get_kb_item("Host/local_checks_enabled")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
if (empty_or_null(get_one_kb_item("Host/CentOS/rpm-list")) && empty_or_null(get_one_kb_item("Host/Debian/dpkg-l")) && empty_or_null(get_one_kb_item("Host/RedHat/rpm-list"))) audit(AUDIT_PACKAGE_LIST_MISSING);

include('linux_unpatched.inc');

var distro_constraints_array = {
  "Debian Linux-11": {
    "package_manager": "dpkg-l",
    "constraints": [
      {
        "release": "11",
        "pkgs": [
          {"reference": "libjs-lodash"},
          {"reference": "node-lodash"},
          {"reference": "node-lodash-packages"}
        ]
      }
    ]
  },
  "Debian Linux-12": {
    "package_manager": "dpkg-l",
    "constraints": [
      {
        "release": "12",
        "pkgs": [
          {"reference": "libjs-lodash"},
          {"reference": "node-lodash"},
          {"reference": "node-lodash-packages"}
        ]
      }
    ]
  },
  "Debian Linux-13": {
    "package_manager": "dpkg-l",
    "constraints": [
      {
        "release": "13",
        "pkgs": [
          {"reference": "libjs-lodash"},
          {"reference": "node-lodash"},
          {"reference": "node-lodash-packages"}
        ]
      }
    ]
  },
  "CentOS Linux-8": {
    "package_manager": "rpm-list",
    "constraints": [
      {
        "release": "8",
        "pkgs": [
          {"reference": "cockpit"},
          {"reference": "cockpit-bridge"},
          {"reference": "cockpit-dashboard"},
          {"reference": "cockpit-doc"},
          {"reference": "cockpit-machines"},
          {"reference": "cockpit-packagekit"},
          {"reference": "cockpit-pcp"},
          {"reference": "cockpit-podman"},
          {"reference": "cockpit-storaged"},
          {"reference": "cockpit-system"},
          {"reference": "cockpit-ws"},
          {"reference": "pcs"},
          {"reference": "pcs-snmp"}
        ]
      }
    ]
  },
  "Red Hat Enterprise Linux-8": {
    "package_manager": "rpm-list",
    "constraints": [
      {
        "release": "8",
        "pkgs": [
          {"reference": "cockpit"},
          {"reference": "cockpit-bridge"},
          {"reference": "cockpit-dashboard"},
          {"reference": "cockpit-doc"},
          {"reference": "cockpit-machines"},
          {"reference": "cockpit-packagekit"},
          {"reference": "cockpit-pcp"},
          {"reference": "cockpit-podman"},
          {"reference": "cockpit-storaged"},
          {"reference": "cockpit-system"},
          {"reference": "cockpit-ws"},
          {"reference": "pcs"},
          {"reference": "pcs-snmp"}
        ]
      }
    ]
  },
  "Red Hat Enterprise Linux-10": {
    "package_manager": "rpm-list",
    "constraints": [
      {
        "release": "10",
        "pkgs": [
          {"reference": "cockpit"},
          {"reference": "cockpit-bridge"},
          {"reference": "cockpit-doc"},
          {"reference": "cockpit-files"},
          {"reference": "cockpit-machines"},
          {"reference": "cockpit-packagekit"},
          {"reference": "cockpit-podman"},
          {"reference": "cockpit-storaged"},
          {"reference": "cockpit-system"},
          {"reference": "cockpit-ws"},
          {"reference": "cockpit-ws-selinux"},
          {"reference": "gjs"},
          {"reference": "gjs-devel"},
          {"reference": "librados-devel"},
          {"reference": "librados2"},
          {"reference": "libradospp-devel"},
          {"reference": "librbd-devel"},
          {"reference": "librbd1"},
          {"reference": "rhsm-icons"},
          {"reference": "subscription-manager-cockpit"}
        ]
      }
    ]
  },
  "Red Hat Enterprise Linux-9": {
    "package_manager": "rpm-list",
    "constraints": [
      {
        "release": "9",
        "pkgs": [
          {"reference": "cockpit"},
          {"reference": "cockpit-bridge"},
          {"reference": "cockpit-doc"},
          {"reference": "cockpit-files"},
          {"reference": "cockpit-machines"},
          {"reference": "cockpit-packagekit"},
          {"reference": "cockpit-pcp"},
          {"reference": "cockpit-podman"},
          {"reference": "cockpit-storaged"},
          {"reference": "cockpit-system"},
          {"reference": "cockpit-ws"},
          {"reference": "cockpit-ws-selinux"},
          {"reference": "gjs"},
          {"reference": "gjs-devel"},
          {"reference": "librados-devel"},
          {"reference": "librados2"},
          {"reference": "libradospp-devel"},
          {"reference": "librbd-devel"},
          {"reference": "librbd1"},
          {"reference": "rhsm-icons"},
          {"reference": "subscription-manager-cockpit"}
        ]
      }
    ]
  }
};

var distro_constraints_values = linux_unpatched::get_distro_constraints(distro_constraints_arr:distro_constraints_array);
if (empty_or_null(distro_constraints_values)) audit(AUDIT_HOST_NOT, 'affected');
var report = linux_unpatched::check_unpatched_constraints(distro_constraints_values:distro_constraints_values);

if (!empty_or_null(report))
{
  security_report_v4(
      port       : 0,
      severity   : SECURITY_HOLE,
      extra      : report
  );
  exit(0);
}
else
{
  audit(AUDIT_HOST_NOT, 'affected');
}