Detections
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Oracle Linux 9 : nginx:1.26 (ELSA-2026-29151)

critical Nessus Plugin ID 322883

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Synopsis

The remote Oracle Linux host is missing a security update.

Description

The remote Oracle Linux 9 host has packages installed that are affected by a vulnerability as referenced in the ELSA-2026-29151 advisory.

 - nginx: code execution and denial of service (CVE-2026-9256)
 - Resolves: RHEL-176218 - nginx:1.26/nginx: NGINX: Arbitrary Code Execution Vulnerability (CVE-2026-42945)
 - CVE-2026-32647 nginx:1.26/nginx: NGINX: Denial of Service or Code Execution via specially crafted MP4 files
 - CVE-2026-27651 nginx:1.26/nginx: NGINX: Denial of Service via undisclosed requests when ngx_mail_auth_http_module is enabled
 - CVE-2026-27784 nginx:1.26/nginx: NGINX: Denial of Service due to memory corruption via crafted MP4 file
 - CVE-2026-27654 nginx:1.26/nginx: NGINX: Denial of Service or file modification via buffer overflow in ngx_http_dav_module
 - CVE-2026-1642 nginx: NGINX: Data injection via man-in-the-middle attack on TLS proxied connections

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

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

Solution

Update the affected packages.

See Also

https://linux.oracle.com/errata/ELSA-2026-29151.html

Plugin Details

Severity: Critical

ID: 322883

File Name: oraclelinux_ELSA-2026-29151.nasl

Version: 1.1

Type: Local

Agent: unix

Published: 6/26/2026

Updated: 6/26/2026

Supported Sensors: Frictionless Assessment Agent, Nessus Agent, Continuous Assessment, tenable_cloud_security, tenable_self_hosted_container_security, Nessus

Risk Information

VPR

Risk Factor: High

Score: 7.4

CVSS v2

Risk Factor: High

Base Score: 7.6

Temporal Score: 6

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

CVSS Score Source: CVE-2026-9256

CVSS v3

Risk Factor: High

Base Score: 8.1

Temporal Score: 7.3

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

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

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:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

Vulnerability Information

CPE: p-cpe:/a:oracle:linux:nginx-core, p-cpe:/a:oracle:linux:nginx-all-modules, p-cpe:/a:oracle:linux:nginx-mod-stream, p-cpe:/a:oracle:linux:nginx-filesystem, cpe:/o:oracle:linux:9, p-cpe:/a:oracle:linux:nginx-mod-devel, p-cpe:/a:oracle:linux:nginx-mod-http-xslt-filter, p-cpe:/a:oracle:linux:nginx-mod-http-image-filter, p-cpe:/a:oracle:linux:nginx-mod-mail, p-cpe:/a:oracle:linux:nginx-mod-http-perl, p-cpe:/a:oracle:linux:nginx

Required KB Items: Host/local_checks_enabled, Host/RedHat/release, Host/RedHat/rpm-list, Host/OracleLinux

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 6/25/2026

Vulnerability Publication Date: 5/22/2026

Reference Information

CVE: CVE-2026-9256

IAVA: 2026-A-0515