RHSA-2026:17794: Critical: nginx security update

Published May 15, 2026
·
Updated

Critical: nginx security update

Other sources

nginx is a web and proxy server supporting HTTP and other protocols, with a focus on high concurrency, performance, and low memory usage. Security Fix(es): nginx: NGINX: Arbitrary Code Execution Vulnerability (CVE-2026-42945) For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

— Red Hat

Affected Software

83 affected componentsFixes available
Red Hat Red Hat Enterprise Linux for Power, little endian - Extended Update Support
Red Hat Red Hat CodeReady Linux Builder for Power, little endian - Extended Update Support
Red Hat Red Hat Enterprise Linux for x86_64 - Update Services for SAP Solutions
Red Hat Red Hat Enterprise Linux for IBM z Systems - Extended Update Support
Red Hat Red Hat CodeReady Linux Builder for ARM 64 - Extended Update Support
Red Hat Red Hat Enterprise Linux Server for Power LE - Update Services for SAP Solutions
Red Hat Red Hat Enterprise Linux for Power, little endian - Extended Life Cycle
Red Hat Red Hat Enterprise Linux Server - AUS
Red Hat Red Hat Enterprise Linux for ARM 64 - 4 years of updates
Red Hat Red Hat Enterprise Linux for ARM 64 - Extended Life Cycle
Red Hat Red Hat Enterprise Linux for IBM z Systems - Extended Life Cycle
Red Hat Red Hat Enterprise Linux for ARM 64 - Extended Update Support
Red Hat Red Hat CodeReady Linux Builder for x86_64 - Extended Update Support
Red Hat Red Hat CodeReady Linux Builder for IBM z Systems - Extended Update Support
Red Hat Red Hat Enterprise Linux for IBM z Systems - 4 years of updates
Red Hat Red Hat Enterprise Linux for x86_64 - Extended Life Cycle
Red Hat Red Hat Enterprise Linux for x86_64 - Extended Update Support
redhat/nginx<1.20.1-22.el9_6.6
1.20.1-22.el9_6.6
redhat/nginx<1.20.1-22.el9_6.6
1.20.1-22.el9_6.6
redhat/nginx-all-modules<1.20.1-22.el9_6.6
1.20.1-22.el9_6.6
redhat/nginx-core<1.20.1-22.el9_6.6
1.20.1-22.el9_6.6
redhat/nginx-core-debuginfo<1.20.1-22.el9_6.6
1.20.1-22.el9_6.6
redhat/nginx-debuginfo<1.20.1-22.el9_6.6
1.20.1-22.el9_6.6
redhat/nginx-debugsource<1.20.1-22.el9_6.6
1.20.1-22.el9_6.6
redhat/nginx-filesystem<1.20.1-22.el9_6.6
1.20.1-22.el9_6.6
redhat/nginx-mod-http-image-filter<1.20.1-22.el9_6.6
1.20.1-22.el9_6.6
redhat/nginx-mod-http-image-filter-debuginfo<1.20.1-22.el9_6.6
1.20.1-22.el9_6.6
redhat/nginx-mod-http-perl<1.20.1-22.el9_6.6
1.20.1-22.el9_6.6
redhat/nginx-mod-http-perl-debuginfo<1.20.1-22.el9_6.6
1.20.1-22.el9_6.6
redhat/nginx-mod-http-xslt-filter<1.20.1-22.el9_6.6
1.20.1-22.el9_6.6
redhat/nginx-mod-http-xslt-filter-debuginfo<1.20.1-22.el9_6.6
1.20.1-22.el9_6.6
redhat/nginx-mod-mail<1.20.1-22.el9_6.6
1.20.1-22.el9_6.6
redhat/nginx-mod-mail-debuginfo<1.20.1-22.el9_6.6
1.20.1-22.el9_6.6
redhat/nginx-mod-stream<1.20.1-22.el9_6.6
1.20.1-22.el9_6.6
redhat/nginx-mod-stream-debuginfo<1.20.1-22.el9_6.6
1.20.1-22.el9_6.6
redhat/nginx-core<1.20.1-22.el9_6.6
1.20.1-22.el9_6.6
redhat/nginx-core-debuginfo<1.20.1-22.el9_6.6
1.20.1-22.el9_6.6
redhat/nginx-debuginfo<1.20.1-22.el9_6.6
1.20.1-22.el9_6.6
redhat/nginx-debugsource<1.20.1-22.el9_6.6
1.20.1-22.el9_6.6
redhat/nginx-mod-http-image-filter<1.20.1-22.el9_6.6
1.20.1-22.el9_6.6
redhat/nginx-mod-http-image-filter-debuginfo<1.20.1-22.el9_6.6
1.20.1-22.el9_6.6
redhat/nginx-mod-http-perl<1.20.1-22.el9_6.6
1.20.1-22.el9_6.6
redhat/nginx-mod-http-perl-debuginfo<1.20.1-22.el9_6.6
1.20.1-22.el9_6.6
redhat/nginx-mod-http-xslt-filter<1.20.1-22.el9_6.6
1.20.1-22.el9_6.6
redhat/nginx-mod-http-xslt-filter-debuginfo<1.20.1-22.el9_6.6
1.20.1-22.el9_6.6
redhat/nginx-mod-mail<1.20.1-22.el9_6.6
1.20.1-22.el9_6.6
redhat/nginx-mod-mail-debuginfo<1.20.1-22.el9_6.6
1.20.1-22.el9_6.6
redhat/nginx-mod-stream<1.20.1-22.el9_6.6
1.20.1-22.el9_6.6
redhat/nginx-mod-stream-debuginfo<1.20.1-22.el9_6.6
1.20.1-22.el9_6.6
redhat/nginx<1.20.1-22.el9_6.6
1.20.1-22.el9_6.6
redhat/nginx-core<1.20.1-22.el9_6.6
1.20.1-22.el9_6.6
redhat/nginx-core-debuginfo<1.20.1-22.el9_6.6
1.20.1-22.el9_6.6
redhat/nginx-debuginfo<1.20.1-22.el9_6.6
1.20.1-22.el9_6.6
redhat/nginx-debugsource<1.20.1-22.el9_6.6
1.20.1-22.el9_6.6
redhat/nginx-mod-http-image-filter<1.20.1-22.el9_6.6
1.20.1-22.el9_6.6
redhat/nginx-mod-http-image-filter-debuginfo<1.20.1-22.el9_6.6
1.20.1-22.el9_6.6
redhat/nginx-mod-http-perl<1.20.1-22.el9_6.6
1.20.1-22.el9_6.6
redhat/nginx-mod-http-perl-debuginfo<1.20.1-22.el9_6.6
1.20.1-22.el9_6.6
redhat/nginx-mod-http-xslt-filter<1.20.1-22.el9_6.6
1.20.1-22.el9_6.6
redhat/nginx-mod-http-xslt-filter-debuginfo<1.20.1-22.el9_6.6
1.20.1-22.el9_6.6
redhat/nginx-mod-mail<1.20.1-22.el9_6.6
1.20.1-22.el9_6.6
redhat/nginx-mod-mail-debuginfo<1.20.1-22.el9_6.6
1.20.1-22.el9_6.6
redhat/nginx-mod-stream<1.20.1-22.el9_6.6
1.20.1-22.el9_6.6
redhat/nginx-mod-stream-debuginfo<1.20.1-22.el9_6.6
1.20.1-22.el9_6.6
redhat/nginx<1.20.1-22.el9_6.6.aa
1.20.1-22.el9_6.6.aa
redhat/nginx-core<1.20.1-22.el9_6.6.aa
1.20.1-22.el9_6.6.aa
redhat/nginx-core-debuginfo<1.20.1-22.el9_6.6.aa
1.20.1-22.el9_6.6.aa
redhat/nginx-debuginfo<1.20.1-22.el9_6.6.aa
1.20.1-22.el9_6.6.aa
redhat/nginx-debugsource<1.20.1-22.el9_6.6.aa
1.20.1-22.el9_6.6.aa
redhat/nginx-mod-http-image-filter<1.20.1-22.el9_6.6.aa
1.20.1-22.el9_6.6.aa
redhat/nginx-mod-http-image-filter-debuginfo<1.20.1-22.el9_6.6.aa
1.20.1-22.el9_6.6.aa
redhat/nginx-mod-http-perl<1.20.1-22.el9_6.6.aa
1.20.1-22.el9_6.6.aa
redhat/nginx-mod-http-perl-debuginfo<1.20.1-22.el9_6.6.aa
1.20.1-22.el9_6.6.aa
redhat/nginx-mod-http-xslt-filter<1.20.1-22.el9_6.6.aa
1.20.1-22.el9_6.6.aa
redhat/nginx-mod-http-xslt-filter-debuginfo<1.20.1-22.el9_6.6.aa
1.20.1-22.el9_6.6.aa
redhat/nginx-mod-mail<1.20.1-22.el9_6.6.aa
1.20.1-22.el9_6.6.aa
redhat/nginx-mod-mail-debuginfo<1.20.1-22.el9_6.6.aa
1.20.1-22.el9_6.6.aa
redhat/nginx-mod-stream<1.20.1-22.el9_6.6.aa
1.20.1-22.el9_6.6.aa
redhat/nginx-mod-stream-debuginfo<1.20.1-22.el9_6.6.aa
1.20.1-22.el9_6.6.aa
redhat/nginx-mod-devel<1.20.1-22.el9_6.6
1.20.1-22.el9_6.6
redhat/nginx-mod-devel<1.20.1-22.el9_6.6
1.20.1-22.el9_6.6
redhat/nginx-mod-devel<1.20.1-22.el9_6.6
1.20.1-22.el9_6.6
redhat/nginx-mod-devel<1.20.1-22.el9_6.6.aa
1.20.1-22.el9_6.6.aa

Remediation

Event History

May 15, 2026
Advisory Published
via Red Hat·03:49 PM
Data Sourced
via Red Hat·03:49 PM
DescriptionSeverityAffected Software
May 26, 2026
Advisory Published
via Red Hat·04:14 PM
Data Sourced
via Red Hat·04:14 PM
Remedy
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Frequently Asked Questions

1

What is the severity of RHSA-2026:17794?

The severity of RHSA-2026:17794 is classified as critical due to an arbitrary code execution vulnerability in nginx.

2

How do I fix RHSA-2026:17794?

To fix RHSA-2026:17794, you need to update nginx to version 1.20.1-22.el9_6.6 or later.

3

What products are affected by RHSA-2026:17794?

RHSA-2026:17794 affects multiple Red Hat Enterprise Linux products, including those for x86_64, Power LE, ARM 64, and IBM z Systems.

4

What vulnerability does RHSA-2026:17794 address?

RHSA-2026:17794 addresses an arbitrary code execution vulnerability identified by CVE-2026-42945.

5

Is there a specific version of nginx required for the update related to RHSA-2026:17794?

Yes, the required version of nginx for the update related to RHSA-2026:17794 is 1.20.1-22.el9_6.6.

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