Linux Distros Unpatched Vulnerability : CVE-2026-105326

critical Nessus Plugin ID 363036

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.

- An argument injection flaw was found in CUPS. When email notification is configured, the CUPS scheduler accepts printer subscription requests that supply a mailto notify-recipient-uri. The mailto notifier passes the recipient address to the configured sendmail program without ensuring it cannot be interpreted as command-line options. A remote attacker who can reach the CUPS service could supply a crafted recipient value starting with - to influence sendmail behavior. Successful exploitation depends on the installed mail transfer agent and CUPS network exposure, and may lead to execution of attacker-controlled commands with the privileges of the CUPS service user. (CVE-2026-105326)

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: Critical

ID: 363036

File Name: unpatched_CVE_2026_105326.nasl

Version: 1.1

Type: Local

Agent: unix

Family: Misc.

Published: 10/6/2026

Updated: 10/6/2026

Supported Sensors: Nessus Agent, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 4.9

Percentile: 58.41

CVSS v2

Risk Factor: High

Base Score: 7.5

Temporal Score: 6.4

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

CVSS Score Source: CVE-2026-105326

CVSS v3

Risk Factor: Critical

Base Score: 9.8

Temporal Score: 9

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

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

Vulnerability Information

CPE: cpe:/o:centos:centos:8, cpe:/o:debian:debian_linux:12.0, cpe:/o:debian:debian_linux:13.0, cpe:/o:debian:debian_linux:14.0, cpe:/o:redhat:enterprise_linux:10, cpe:/o:redhat:enterprise_linux:8, cpe:/o:redhat:enterprise_linux:9, p-cpe:/a:centos:centos:cups-client, p-cpe:/a:centos:centos:cups-devel, p-cpe:/a:centos:centos:cups-filesystem, p-cpe:/a:centos:centos:cups-ipptool, p-cpe:/a:centos:centos:cups-libs, p-cpe:/a:centos:centos:cups-lpd, p-cpe:/a:centos:centos:cups-printerapp, p-cpe:/a:centos:centos:cups, p-cpe:/a:debian:debian_linux:cups, p-cpe:/a:redhat:enterprise_linux:cups-client, p-cpe:/a:redhat:enterprise_linux:cups-devel, p-cpe:/a:redhat:enterprise_linux:cups-filesystem, p-cpe:/a:redhat:enterprise_linux:cups-ipptool, p-cpe:/a:redhat:enterprise_linux:cups-libs, p-cpe:/a:redhat:enterprise_linux:cups-lpd, p-cpe:/a:redhat:enterprise_linux:cups-printerapp, p-cpe:/a:redhat:enterprise_linux:cups

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

Exploit Ease: No known exploits are available

Vulnerability Publication Date: 10/5/2026

Reference Information

CVE: CVE-2026-105326

Detections

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