RHSA-2026:98527 - Security Advisory

Topic

An update for the nginx:1.26 module is now available for Red Hat Enterprise Linux 9.

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.

Description

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: heap-based buffer overflow in ngx_http_core_module via alias with rewrite referencing $request_filename (CVE-2026-15176)
• nginx: NGINX ngx_http_core_module vulnerability (CVE-2026-97205)

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.

Solution

For details on how to apply this update, which includes the changes described in this advisory, refer to:

https://access.redhat.com/articles/11258

Affected Products

• Red Hat Enterprise Linux for x86_64 9 x86_64
• Red Hat Enterprise Linux for IBM z Systems 9 s390x
• Red Hat Enterprise Linux for Power, little endian 9 ppc64le
• Red Hat Enterprise Linux for ARM 64 9 aarch64

Fixes

• BZ - 2552352 - CVE-2026-15176 nginx: nginx: heap-based buffer overflow in ngx_http_core_module via alias with rewrite referencing $request_filename
• BZ - 2552359 - CVE-2026-97205 nginx: NGINX ngx_http_core_module vulnerability

CVEs

• CVE-2026-15176
• CVE-2026-97205

References

• https://access.redhat.com/security/updates/classification/#important