SUSE SLES15 Security Update : nginx (SUSE-SU-2026:1761-1)

high Nessus Plugin ID 313673

Synopsis

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

Description

The remote SUSE Linux SLES15 / SLES_SAP15 host has packages installed that are affected by multiple vulnerabilities as referenced in the SUSE-SU-2026:1761-1 advisory.

- CVE-2026-1642: plain text data injection into the response from an upstream proxied server via MITM attack (bsc#1257675).
- CVE-2026-27654: buffer overflow in the NGINX worker process via the `ngx_http_dav_module` module (bsc#1260416).
- CVE-2026-27784: NGINX worker memory overread or overwrite via a specially crafted MP4 file (bsc#1260417).
- CVE-2026-28753: arbitrary header injection into SMTP upstream requests via attacker-controlled DNS server (bsc#1260418).

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: High

ID: 313673

File Name: suse_SU-2026-1761-1.nasl

Version: 1.1

Type: Local

Agent: unix

Family: SuSE Local Security Checks

Published: 5/10/2026

Updated: 5/10/2026

Supported Sensors: Continuous Assessment, Nessus Agent, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 5.2

CVSS v2

Risk Factor: High

Base Score: 8.5

Temporal Score: 6.7

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

CVSS Score Source: CVE-2026-27654

CVSS v3

Risk Factor: Medium

Base Score: 5.5

Temporal Score: 5

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

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

CVSS Score Source: CVE-2026-27784

CVSS v4

Risk Factor: High

Base Score: 8.5

Threat Score: 7.1

Threat Vector: CVSS:4.0/E:P

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

CVSS Score Source: CVE-2026-27784

Vulnerability Information

CPE: p-cpe:/a:novell:suse_linux:nginx-source, cpe:/o:novell:suse_linux:15, p-cpe:/a:novell:suse_linux:nginx

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: 5/8/2026

Vulnerability Publication Date: 2/4/2026

Reference Information

CVE: CVE-2026-1642, CVE-2026-27654, CVE-2026-27784, CVE-2026-28753

IAVA: 2026-A-0140, 2026-A-0280

SuSE: SUSE-SU-2026:1761-1

Detections

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