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An update for nginx is now available for Red Hat Enterprise Linux 10.

Red Hat Product Security has rated this update as having a security impact of
Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.

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 or Denial of Service via heap-based
buffer overflow with crafted HTTP/2 headers (CVE-2026-42055)

Bug Fix(es) and Enhancement(s):

* "HTTP/2 bomb" nginx fix breaks module ABI causing crashes
[rhel-10.2.z] (JIRA:RHEL-191778)

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.

This content is licensed under the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/). If you distribute this content, or a modified version of it, you must provide attribution to Red Hat Inc. and provide a link to the original.

CVE-2026-42055: Incorrect Calculation of Buffer Size (CWE-131)