Linux Distros Unpatched Vulnerability : CVE-2026-22741

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

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  script_id(312040);
  script_version("1.4");
  script_set_attribute(attribute:"plugin_modification_date", value:"2026/05/22");

  script_cve_id("CVE-2026-22741");

  script_name(english:"Linux Distros Unpatched Vulnerability : CVE-2026-22741");

  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.

  - Spring MVC and WebFlux applications are vulnerable to cache poisoning when resolving static resources.
    More precisely, an application can be vulnerable when all the following are true: * the application is
    using Spring MVC or Spring WebFlux * the application is configuring the resource chain support
    https://docs.spring.io/spring-framework/reference/web/webmvc/mvc-config/static-resources.html#page-title
    with caching enabled * the application adds support for encoded resources resolution * the resource cache
    must be empty when the attacker has access to the application When all the conditions above are met, the
    attacker can send malicious requests and poison the resource cache with resources using the wrong
    encoding. This can cause a denial of service by breaking the front-end application for clients.
    (CVE-2026-22741)

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-2026-22741");
  script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/CVE-2026-22741");
  script_set_attribute(attribute:"see_also", value:"https://ubuntu.com/security/CVE-2026-22741");
  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:M/Au:N/C:N/I:N/A:P");
  script_set_cvss_temporal_vector("CVSS2#E:U/RL:U/RC:C");
  script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:N/A:L");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:U/RL:U/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2026-22741");

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

  script_set_attribute(attribute:"vuln_publication_date", value:"2026/04/29");
  script_set_attribute(attribute:"plugin_publication_date", value:"2026/05/04");

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  script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:14.04:-:lts");
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  script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:18.04:-:lts");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:20.04:-:lts");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:22.04:-:lts");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:24.04:-:lts");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:25.10");
  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");
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  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:log4j-web");
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  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:resteasy-javadoc");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libspring-java");
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  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/Debian Linux-14", "Host/OS/Red Hat Enterprise Linux-8", "Host/OS/Red Hat Enterprise Linux-9", "Host/OS/Ubuntu Linux-14.04", "Host/OS/Ubuntu Linux-16.04", "Host/OS/Ubuntu Linux-18.04", "Host/OS/Ubuntu Linux-20.04", "Host/OS/Ubuntu Linux-22.04", "Host/OS/Ubuntu Linux-24.04", "Host/OS/Ubuntu Linux-25.10");

  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": "libspring-aop-java"},
          {"reference": "libspring-beans-java"},
          {"reference": "libspring-context-java"},
          {"reference": "libspring-context-support-java"},
          {"reference": "libspring-core-java"},
          {"reference": "libspring-expression-java"},
          {"reference": "libspring-instrument-java"},
          {"reference": "libspring-jdbc-java"},
          {"reference": "libspring-jms-java"},
          {"reference": "libspring-messaging-java"},
          {"reference": "libspring-orm-java"},
          {"reference": "libspring-oxm-java"},
          {"reference": "libspring-test-java"},
          {"reference": "libspring-transaction-java"},
          {"reference": "libspring-web-java"},
          {"reference": "libspring-web-portlet-java"},
          {"reference": "libspring-web-servlet-java"}
        ]
      }
    ]
  },
  "Debian Linux-12": {
    "package_manager": "dpkg-l",
    "constraints": [
      {
        "release": "12",
        "pkgs": [
          {"reference": "libspring-aop-java"},
          {"reference": "libspring-beans-java"},
          {"reference": "libspring-context-java"},
          {"reference": "libspring-context-support-java"},
          {"reference": "libspring-core-java"},
          {"reference": "libspring-expression-java"},
          {"reference": "libspring-instrument-java"},
          {"reference": "libspring-jdbc-java"},
          {"reference": "libspring-jms-java"},
          {"reference": "libspring-messaging-java"},
          {"reference": "libspring-orm-java"},
          {"reference": "libspring-oxm-java"},
          {"reference": "libspring-test-java"},
          {"reference": "libspring-transaction-java"},
          {"reference": "libspring-web-java"},
          {"reference": "libspring-web-portlet-java"},
          {"reference": "libspring-web-servlet-java"}
        ]
      }
    ]
  },
  "Debian Linux-13": {
    "package_manager": "dpkg-l",
    "constraints": [
      {
        "release": "13",
        "pkgs": [
          {"reference": "libspring-aop-java"},
          {"reference": "libspring-beans-java"},
          {"reference": "libspring-context-java"},
          {"reference": "libspring-context-support-java"},
          {"reference": "libspring-core-java"},
          {"reference": "libspring-expression-java"},
          {"reference": "libspring-instrument-java"},
          {"reference": "libspring-jdbc-java"},
          {"reference": "libspring-jms-java"},
          {"reference": "libspring-messaging-java"},
          {"reference": "libspring-orm-java"},
          {"reference": "libspring-oxm-java"},
          {"reference": "libspring-test-java"},
          {"reference": "libspring-transaction-java"},
          {"reference": "libspring-web-java"},
          {"reference": "libspring-web-portlet-java"},
          {"reference": "libspring-web-servlet-java"}
        ]
      }
    ]
  },
  "Debian Linux-14": {
    "package_manager": "dpkg-l",
    "constraints": [
      {
        "release": "14",
        "pkgs": [
          {"reference": "libspring-aop-java"},
          {"reference": "libspring-beans-java"},
          {"reference": "libspring-context-java"},
          {"reference": "libspring-context-support-java"},
          {"reference": "libspring-core-java"},
          {"reference": "libspring-expression-java"},
          {"reference": "libspring-instrument-java"},
          {"reference": "libspring-jdbc-java"},
          {"reference": "libspring-jms-java"},
          {"reference": "libspring-messaging-java"},
          {"reference": "libspring-orm-java"},
          {"reference": "libspring-oxm-java"},
          {"reference": "libspring-test-java"},
          {"reference": "libspring-transaction-java"},
          {"reference": "libspring-web-java"},
          {"reference": "libspring-web-portlet-java"},
          {"reference": "libspring-web-servlet-java"}
        ]
      }
    ]
  },
  "Ubuntu Linux-14.04": {
    "package_manager": "dpkg-l",
    "constraints": [
      {
        "release": "14.04",
        "pkgs": [
          {"reference": "libspring-java"}
        ]
      }
    ]
  },
  "Ubuntu Linux-16.04": {
    "package_manager": "dpkg-l",
    "constraints": [
      {
        "release": "16.04",
        "pkgs": [
          {"reference": "libspring-java"}
        ]
      }
    ]
  },
  "Ubuntu Linux-18.04": {
    "package_manager": "dpkg-l",
    "constraints": [
      {
        "release": "18.04",
        "pkgs": [
          {"reference": "libspring-java"}
        ]
      }
    ]
  },
  "Ubuntu Linux-20.04": {
    "package_manager": "dpkg-l",
    "constraints": [
      {
        "release": "20.04",
        "pkgs": [
          {"reference": "libspring-java"}
        ]
      }
    ]
  },
  "Ubuntu Linux-22.04": {
    "package_manager": "dpkg-l",
    "constraints": [
      {
        "release": "22.04",
        "pkgs": [
          {"reference": "libspring-java"}
        ]
      }
    ]
  },
  "Ubuntu Linux-24.04": {
    "package_manager": "dpkg-l",
    "constraints": [
      {
        "release": "24.04",
        "pkgs": [
          {"reference": "libspring-java"}
        ]
      }
    ]
  },
  "Ubuntu Linux-25.10": {
    "package_manager": "dpkg-l",
    "constraints": [
      {
        "release": "25.10",
        "pkgs": [
          {"reference": "libspring-java"}
        ]
      }
    ]
  },
  "CentOS Linux-8": {
    "package_manager": "rpm-list",
    "constraints": [
      {
        "release": "8",
        "pkgs": [
          {"reference": "log4j"},
          {"reference": "log4j-jcl"},
          {"reference": "log4j-slf4j"},
          {"reference": "log4j-web"},
          {"reference": "resteasy"},
          {"reference": "resteasy-javadoc"}
        ]
      }
    ]
  },
  "Red Hat Enterprise Linux-8": {
    "package_manager": "rpm-list",
    "constraints": [
      {
        "release": "8",
        "pkgs": [
          {"reference": "log4j"},
          {"reference": "log4j-jcl"},
          {"reference": "log4j-slf4j"},
          {"reference": "log4j-web"},
          {"reference": "resteasy"},
          {"reference": "resteasy-javadoc"}
        ]
      }
    ]
  },
  "Red Hat Enterprise Linux-9": {
    "package_manager": "rpm-list",
    "constraints": [
      {
        "release": "9",
        "pkgs": [
          {"reference": "log4j"},
          {"reference": "log4j-jcl"},
          {"reference": "log4j-slf4j"},
          {"reference": "pki-resteasy"},
          {"reference": "pki-resteasy-client"},
          {"reference": "pki-resteasy-core"},
          {"reference": "pki-resteasy-jackson2-provider"},
          {"reference": "pki-resteasy-servlet-initializer"}
        ]
      }
    ]
  }
};

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_WARNING,
      extra      : report
  );
  exit(0);
}
else
{
  audit(AUDIT_HOST_NOT, 'affected');
}