Linux Distros Unpatched Vulnerability : CVE-2026-1642

high Nessus Plugin ID 297957

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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 vulnerability exists in NGINX OSS and NGINX Plus when configured to proxy to upstream Transport Layer Security (TLS) servers. An attacker with a man-in-the-middle (MITM) position on the upstream server sidealong with conditions beyond the attacker's controlmay be able to inject plain text data into the response from an upstream proxied server. Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated. (CVE-2026-1642)

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: 297957

File Name: unpatched_CVE_2026_1642.nasl

Version: 1.2

Type: local

Agent: unix

Family: Misc.

Published: 2/4/2026

Updated: 2/5/2026

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

Risk Information

VPR

Risk Factor: Medium

Score: 6.0

CVSS v2

Risk Factor: Medium

Base Score: 5.8

Temporal Score: 4.9

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

CVSS Score Source: CVE-2026-1642

CVSS v3

Risk Factor: High

Base Score: 7.4

Temporal Score: 6.8

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

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

CVSS v4

Risk Factor: High

Base Score: 8.2

Threat Score: 4.6

Threat Vector: CVSS:4.0/E:U

Vector: CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N

Vulnerability Information

CPE: cpe:/o:debian:debian_linux:11.0, p-cpe:/a:centos:centos:nginx-mod-mail, p-cpe:/a:centos:centos:nginx-mod-http-image-filter, p-cpe:/a:redhat:enterprise_linux:nginx-mod-mail, p-cpe:/a:redhat:enterprise_linux:nginx, p-cpe:/a:centos:centos:nginx-mod-devel, cpe:/o:debian:debian_linux:12.0, p-cpe:/a:centos:centos:nginx-all-modules, p-cpe:/a:redhat:enterprise_linux:nginx-mod-http-perl, cpe:/o:redhat:enterprise_linux:9, p-cpe:/a:centos:centos:nginx-mod-stream, p-cpe:/a:redhat:enterprise_linux:nginx-mod-devel, p-cpe:/a:redhat:enterprise_linux:nginx-core, cpe:/o:centos:centos:8, p-cpe:/a:centos:centos:nginx, p-cpe:/a:centos:centos:nginx-mod-http-perl, p-cpe:/a:redhat:enterprise_linux:nginx-filesystem, cpe:/o:redhat:enterprise_linux:8, cpe:/o:redhat:enterprise_linux:10, cpe:/o:debian:debian_linux:13.0, p-cpe:/a:centos:centos:nginx-mod-http-xslt-filter, p-cpe:/a:centos:centos:nginx-filesystem, p-cpe:/a:redhat:enterprise_linux:nginx-all-modules, p-cpe:/a:redhat:enterprise_linux:nginx-mod-http-image-filter, p-cpe:/a:redhat:enterprise_linux:nginx-mod-stream, p-cpe:/a:centos:centos:nginx-core, p-cpe:/a:debian:debian_linux:nginx, cpe:/o:debian:debian_linux:14.0, p-cpe:/a:redhat:enterprise_linux:nginx-mod-http-xslt-filter

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: 2/4/2026

Reference Information

CVE: CVE-2026-1642

Detections

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