openSUSE 16 Security Update : nginx (openSUSE-SU-2026:20796-1)

critical Nessus Plugin ID 317697

Synopsis

The remote openSUSE host is missing one or more security updates.

Description

The remote openSUSE 16 host has packages installed that are affected by multiple vulnerabilities as referenced in the openSUSE-SU-2026:20796-1 advisory.

This update for nginx fixes the following issues

- CVE-2026-27651: denial of service via undisclosed requests when the `ngx_mail_auth_http_module` is enabled (bsc#1260415).
- CVE-2026-32647: NGINX worker memory over-read or over-write via a specially crafted MP4 file (bsc#1260420).
- CVE-2026-40701: heap use-after-free in the worker process when the `ssl_verify_client` and the `ssl_ocsp` directives are set due to issue in the `ngx_http_ssl_module` module (bsc#1265229).
- CVE-2026-42934: heap buffer overread in the worker process due to issue in the `ngx_http_charset_module` module (bsc#1265231).
- CVE-2026-42945: heap buffer overflow via crafted HTTP requests due to issue in `ngx_http_rewrite_module` (bsc#1265232).
- CVE-2026-42946: excessive memory allocation and data overread due to issue in the `ngx_http_scgi_module` and `ngx_http_uwsgi_module` modules (bsc#1265233).

Tenable has extracted the preceding description block directly from the SUSE security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

Solution

Update the affected nginx and / or nginx-source packages.

Plugin Details

Severity: Critical

ID: 317697

File Name: openSUSE-2026-20796-1.nasl

Version: 1.1

Type: Local

Agent: unix

Family: SuSE Local Security Checks

Published: 5/29/2026

Updated: 5/29/2026

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

Risk Information

VPR

Risk Factor: Critical

Score: 9.4

CVSS v2

Risk Factor: Medium

Base Score: 6.8

Temporal Score: 5.3

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

CVSS Score Source: CVE-2026-32647

CVSS v3

Risk Factor: High

Base Score: 8.6

Temporal Score: 7.7

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

Temporal Vector: CVSS:3.0/E:P/RL:O/RC:C

CVSS Score Source: CVE-2026-42945

CVSS v4

Risk Factor: Critical

Base Score: 9.2

Threat Score: 8.2

Threat Vector: CVSS:4.0/E:P

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

CVSS Score Source: CVE-2026-42945

Vulnerability Information

CPE: cpe:/o:novell:opensuse:16.0, p-cpe:/a:novell:opensuse:nginx, p-cpe:/a:novell:opensuse:nginx-source

Required KB Items: Host/local_checks_enabled, Host/cpu, Host/SuSE/release, Host/SuSE/rpm-list

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 5/25/2026

Vulnerability Publication Date: 3/24/2026

Reference Information

CVE: CVE-2026-27651, CVE-2026-32647, CVE-2026-40701, CVE-2026-42934, CVE-2026-42945, CVE-2026-42946

IAVA: 2026-A-0280-S

Detections

Analytics