Linux Distros Unpatched Vulnerability : CVE-2026-3260

high Nessus Plugin ID 303390

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Synopsis

The Linux/Unix host has one or more packages installed with a vulnerability that the vendor indicates will not be patched.

Description

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available.

- A flaw was found in Undertow. A remote attacker could exploit this vulnerability by sending an HTTP GET request containing multipart/form-data content. If the underlying application processes parameters using methods like `getParameterMap()`, the server prematurely parses and stores this content to disk. This could lead to resource exhaustion, potentially resulting in a Denial of Service (DoS). (CVE-2026-3260)

Note that Nessus relies on the presence of the package as reported by the vendor.

Solution

There is no known solution at this time.

Plugin Details

Severity: High

ID: 303390

File Name: unpatched_CVE_2026_3260.nasl

Version: 1.6

Type: Local

Agent: unix

Family: Misc.

Published: 3/24/2026

Updated: 4/9/2026

Supported Sensors: Agentless Assessment, Frictionless Assessment Agent, Frictionless Assessment AWS, Frictionless Assessment Azure, Nessus Agent, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 4.4

CVSS v2

Risk Factor: High

Base Score: 7.8

Temporal Score: 6.6

Vector: CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:C

CVSS Score Source: CVE-2026-3260

CVSS v3

Risk Factor: High

Base Score: 7.5

Temporal Score: 6.9

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Temporal Vector: CVSS:3.0/E:U/RL:U/RC:C

Vulnerability Information

CPE: cpe:/o:canonical:ubuntu_linux:20.04:-:lts, p-cpe:/a:canonical:ubuntu_linux:undertow, p-cpe:/a:centos:centos:moditect-javadoc, cpe:/o:canonical:ubuntu_linux:24.04:-:lts, p-cpe:/a:centos:centos:pki-resteasy-servlet-initializer, p-cpe:/a:debian:debian_linux:undertow, p-cpe:/a:redhat:enterprise_linux:moditect-javadoc, p-cpe:/a:redhat:enterprise_linux:pki-resteasy-client, p-cpe:/a:centos:centos:pki-resteasy, p-cpe:/a:centos:centos:pki-resteasy-core, p-cpe:/a:centos:centos:resteasy-javadoc, p-cpe:/a:redhat:enterprise_linux:pki-resteasy-servlet-initializer, p-cpe:/a:redhat:enterprise_linux:resteasy-javadoc, cpe:/o:canonical:ubuntu_linux:25.10, p-cpe:/a:redhat:enterprise_linux:pki-resteasy-core, cpe:/o:redhat:enterprise_linux:9, cpe:/o:canonical:ubuntu_linux:18.04:-:lts, cpe:/o:centos:centos:8, p-cpe:/a:redhat:enterprise_linux:resteasy, cpe:/o:redhat:enterprise_linux:8, p-cpe:/a:centos:centos:pki-resteasy-jackson2-provider, cpe:/o:redhat:enterprise_linux:10, p-cpe:/a:centos:centos:pki-resteasy-client, p-cpe:/a:centos:centos:moditect, p-cpe:/a:redhat:enterprise_linux:pki-resteasy, p-cpe:/a:redhat:enterprise_linux:moditect, p-cpe:/a:redhat:enterprise_linux:pki-resteasy-jackson2-provider, cpe:/o:canonical:ubuntu_linux:16.04:-:lts, cpe:/o:canonical:ubuntu_linux:22.04:-:lts, cpe:/o:debian:debian_linux:14.0, p-cpe:/a:centos:centos:resteasy

Required KB Items: Host/cpu, Host/local_checks_enabled, global_settings/vendor_unpatched, Host/OS/identifier

Exploit Ease: No known exploits are available

Vulnerability Publication Date: 3/24/2026

Reference Information

CVE: CVE-2026-3260

Detections

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