RHSA-2026:99156: Important: nginx security update

Published Nov 11, 2026
·
Updated

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 ngxhttpcoremodule via alias with rewrite referencing $requestfilename (CVE-2026-15176) nginx: NGINX ngxhttpcoremodule 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.

Affected Software

66 affected componentsFixes available
redhat/nginx<1.26.3-6.el10_2.8
1.26.3-6.el10_2.8
redhat/nginx<1.26.3-6.el10_2.8
1.26.3-6.el10_2.8
redhat/nginx-all-modules<1.26.3-6.el10_2.8
1.26.3-6.el10_2.8
redhat/nginx-core<1.26.3-6.el10_2.8
1.26.3-6.el10_2.8
redhat/nginx-core-debuginfo<1.26.3-6.el10_2.8
1.26.3-6.el10_2.8
redhat/nginx-debuginfo<1.26.3-6.el10_2.8
1.26.3-6.el10_2.8
redhat/nginx-debugsource<1.26.3-6.el10_2.8
1.26.3-6.el10_2.8
redhat/nginx-filesystem<1.26.3-6.el10_2.8
1.26.3-6.el10_2.8
redhat/nginx-mod-http-image-filter<1.26.3-6.el10_2.8
1.26.3-6.el10_2.8
redhat/nginx-mod-http-image-filter-debuginfo<1.26.3-6.el10_2.8
1.26.3-6.el10_2.8
redhat/nginx-mod-http-perl<1.26.3-6.el10_2.8
1.26.3-6.el10_2.8
redhat/nginx-mod-http-perl-debuginfo<1.26.3-6.el10_2.8
1.26.3-6.el10_2.8
redhat/nginx-mod-http-xslt-filter<1.26.3-6.el10_2.8
1.26.3-6.el10_2.8
redhat/nginx-mod-http-xslt-filter-debuginfo<1.26.3-6.el10_2.8
1.26.3-6.el10_2.8
redhat/nginx-mod-mail<1.26.3-6.el10_2.8
1.26.3-6.el10_2.8
redhat/nginx-mod-mail-debuginfo<1.26.3-6.el10_2.8
1.26.3-6.el10_2.8
redhat/nginx-mod-stream<1.26.3-6.el10_2.8
1.26.3-6.el10_2.8
redhat/nginx-mod-stream-debuginfo<1.26.3-6.el10_2.8
1.26.3-6.el10_2.8
redhat/nginx-core<1.26.3-6.el10_2.8
1.26.3-6.el10_2.8
redhat/nginx-core-debuginfo<1.26.3-6.el10_2.8
1.26.3-6.el10_2.8
redhat/nginx-debuginfo<1.26.3-6.el10_2.8
1.26.3-6.el10_2.8
redhat/nginx-debugsource<1.26.3-6.el10_2.8
1.26.3-6.el10_2.8
redhat/nginx-mod-http-image-filter<1.26.3-6.el10_2.8
1.26.3-6.el10_2.8
redhat/nginx-mod-http-image-filter-debuginfo<1.26.3-6.el10_2.8
1.26.3-6.el10_2.8
redhat/nginx-mod-http-perl<1.26.3-6.el10_2.8
1.26.3-6.el10_2.8
redhat/nginx-mod-http-perl-debuginfo<1.26.3-6.el10_2.8
1.26.3-6.el10_2.8
redhat/nginx-mod-http-xslt-filter<1.26.3-6.el10_2.8
1.26.3-6.el10_2.8
redhat/nginx-mod-http-xslt-filter-debuginfo<1.26.3-6.el10_2.8
1.26.3-6.el10_2.8
redhat/nginx-mod-mail<1.26.3-6.el10_2.8
1.26.3-6.el10_2.8
redhat/nginx-mod-mail-debuginfo<1.26.3-6.el10_2.8
1.26.3-6.el10_2.8
redhat/nginx-mod-stream<1.26.3-6.el10_2.8
1.26.3-6.el10_2.8
redhat/nginx-mod-stream-debuginfo<1.26.3-6.el10_2.8
1.26.3-6.el10_2.8
redhat/nginx<1.26.3-6.el10_2.8
1.26.3-6.el10_2.8
redhat/nginx-core<1.26.3-6.el10_2.8
1.26.3-6.el10_2.8
redhat/nginx-core-debuginfo<1.26.3-6.el10_2.8
1.26.3-6.el10_2.8
redhat/nginx-debuginfo<1.26.3-6.el10_2.8
1.26.3-6.el10_2.8
redhat/nginx-debugsource<1.26.3-6.el10_2.8
1.26.3-6.el10_2.8
redhat/nginx-mod-http-image-filter<1.26.3-6.el10_2.8
1.26.3-6.el10_2.8
redhat/nginx-mod-http-image-filter-debuginfo<1.26.3-6.el10_2.8
1.26.3-6.el10_2.8
redhat/nginx-mod-http-perl<1.26.3-6.el10_2.8
1.26.3-6.el10_2.8
redhat/nginx-mod-http-perl-debuginfo<1.26.3-6.el10_2.8
1.26.3-6.el10_2.8
redhat/nginx-mod-http-xslt-filter<1.26.3-6.el10_2.8
1.26.3-6.el10_2.8
redhat/nginx-mod-http-xslt-filter-debuginfo<1.26.3-6.el10_2.8
1.26.3-6.el10_2.8
redhat/nginx-mod-mail<1.26.3-6.el10_2.8
1.26.3-6.el10_2.8
redhat/nginx-mod-mail-debuginfo<1.26.3-6.el10_2.8
1.26.3-6.el10_2.8
redhat/nginx-mod-stream<1.26.3-6.el10_2.8
1.26.3-6.el10_2.8
redhat/nginx-mod-stream-debuginfo<1.26.3-6.el10_2.8
1.26.3-6.el10_2.8
redhat/nginx<1.26.3-6.el10_2.8.aa
1.26.3-6.el10_2.8.aa
redhat/nginx-core<1.26.3-6.el10_2.8.aa
1.26.3-6.el10_2.8.aa
redhat/nginx-core-debuginfo<1.26.3-6.el10_2.8.aa
1.26.3-6.el10_2.8.aa
redhat/nginx-debuginfo<1.26.3-6.el10_2.8.aa
1.26.3-6.el10_2.8.aa
redhat/nginx-debugsource<1.26.3-6.el10_2.8.aa
1.26.3-6.el10_2.8.aa
redhat/nginx-mod-http-image-filter<1.26.3-6.el10_2.8.aa
1.26.3-6.el10_2.8.aa
redhat/nginx-mod-http-image-filter-debuginfo<1.26.3-6.el10_2.8.aa
1.26.3-6.el10_2.8.aa
redhat/nginx-mod-http-perl<1.26.3-6.el10_2.8.aa
1.26.3-6.el10_2.8.aa
redhat/nginx-mod-http-perl-debuginfo<1.26.3-6.el10_2.8.aa
1.26.3-6.el10_2.8.aa
redhat/nginx-mod-http-xslt-filter<1.26.3-6.el10_2.8.aa
1.26.3-6.el10_2.8.aa
redhat/nginx-mod-http-xslt-filter-debuginfo<1.26.3-6.el10_2.8.aa
1.26.3-6.el10_2.8.aa
redhat/nginx-mod-mail<1.26.3-6.el10_2.8.aa
1.26.3-6.el10_2.8.aa
redhat/nginx-mod-mail-debuginfo<1.26.3-6.el10_2.8.aa
1.26.3-6.el10_2.8.aa
redhat/nginx-mod-stream<1.26.3-6.el10_2.8.aa
1.26.3-6.el10_2.8.aa
redhat/nginx-mod-stream-debuginfo<1.26.3-6.el10_2.8.aa
1.26.3-6.el10_2.8.aa
redhat/nginx-mod-devel<1.26.3-6.el10_2.8
1.26.3-6.el10_2.8
redhat/nginx-mod-devel<1.26.3-6.el10_2.8
1.26.3-6.el10_2.8
redhat/nginx-mod-devel<1.26.3-6.el10_2.8
1.26.3-6.el10_2.8
redhat/nginx-mod-devel<1.26.3-6.el10_2.8.aa
1.26.3-6.el10_2.8.aa

Remediation

Recommended actions to resolve this vulnerability, in priority order.

  1. Upgrade

    Upgrade redhat/nginx to a version that resolves this vulnerability.

    Fixed in 1.26.3-6.el10_2.8
  2. Upgrade

    Upgrade redhat/nginx-all-modules to a version that resolves this vulnerability.

    Fixed in 1.26.3-6.el10_2.8
  3. Upgrade

    Upgrade redhat/nginx-core to a version that resolves this vulnerability.

    Fixed in 1.26.3-6.el10_2.8
  4. Upgrade

    Upgrade redhat/nginx-core-debuginfo to a version that resolves this vulnerability.

    Fixed in 1.26.3-6.el10_2.8
  5. Upgrade

    Upgrade redhat/nginx-debuginfo to a version that resolves this vulnerability.

    Fixed in 1.26.3-6.el10_2.8
  6. Upgrade

    Upgrade redhat/nginx-debugsource to a version that resolves this vulnerability.

    Fixed in 1.26.3-6.el10_2.8
  7. Upgrade

    Upgrade redhat/nginx-filesystem to a version that resolves this vulnerability.

    Fixed in 1.26.3-6.el10_2.8
  8. Upgrade

    Upgrade redhat/nginx-mod-http-image-filter to a version that resolves this vulnerability.

    Fixed in 1.26.3-6.el10_2.8
  9. Upgrade

    Upgrade redhat/nginx-mod-http-image-filter-debuginfo to a version that resolves this vulnerability.

    Fixed in 1.26.3-6.el10_2.8
  10. Upgrade

    Upgrade redhat/nginx-mod-http-perl to a version that resolves this vulnerability.

    Fixed in 1.26.3-6.el10_2.8
  11. Upgrade

    Upgrade redhat/nginx-mod-http-perl-debuginfo to a version that resolves this vulnerability.

    Fixed in 1.26.3-6.el10_2.8
  12. Upgrade

    Upgrade redhat/nginx-mod-http-xslt-filter to a version that resolves this vulnerability.

    Fixed in 1.26.3-6.el10_2.8
  13. Upgrade

    Upgrade redhat/nginx-mod-http-xslt-filter-debuginfo to a version that resolves this vulnerability.

    Fixed in 1.26.3-6.el10_2.8
  14. Upgrade

    Upgrade redhat/nginx-mod-mail to a version that resolves this vulnerability.

    Fixed in 1.26.3-6.el10_2.8
  15. Upgrade

    Upgrade redhat/nginx-mod-mail-debuginfo to a version that resolves this vulnerability.

    Fixed in 1.26.3-6.el10_2.8
  16. Upgrade

    Upgrade redhat/nginx-mod-stream to a version that resolves this vulnerability.

    Fixed in 1.26.3-6.el10_2.8
  17. Upgrade

    Upgrade redhat/nginx-mod-stream-debuginfo to a version that resolves this vulnerability.

    Fixed in 1.26.3-6.el10_2.8
  18. Upgrade

    Upgrade redhat/nginx to a version that resolves this vulnerability.

    Fixed in 1.26.3-6.el10_2.8.aa
  19. Upgrade

    Upgrade redhat/nginx-core to a version that resolves this vulnerability.

    Fixed in 1.26.3-6.el10_2.8.aa
  20. Upgrade

    Upgrade redhat/nginx-core-debuginfo to a version that resolves this vulnerability.

    Fixed in 1.26.3-6.el10_2.8.aa
  21. Upgrade

    Upgrade redhat/nginx-debuginfo to a version that resolves this vulnerability.

    Fixed in 1.26.3-6.el10_2.8.aa
  22. Upgrade

    Upgrade redhat/nginx-debugsource to a version that resolves this vulnerability.

    Fixed in 1.26.3-6.el10_2.8.aa
  23. Upgrade

    Upgrade redhat/nginx-mod-http-image-filter to a version that resolves this vulnerability.

    Fixed in 1.26.3-6.el10_2.8.aa
  24. Upgrade

    Upgrade redhat/nginx-mod-http-image-filter-debuginfo to a version that resolves this vulnerability.

    Fixed in 1.26.3-6.el10_2.8.aa
  25. Upgrade

    Upgrade redhat/nginx-mod-http-perl to a version that resolves this vulnerability.

    Fixed in 1.26.3-6.el10_2.8.aa
  26. Upgrade

    Upgrade redhat/nginx-mod-http-perl-debuginfo to a version that resolves this vulnerability.

    Fixed in 1.26.3-6.el10_2.8.aa
  27. Upgrade

    Upgrade redhat/nginx-mod-http-xslt-filter to a version that resolves this vulnerability.

    Fixed in 1.26.3-6.el10_2.8.aa
  28. Upgrade

    Upgrade redhat/nginx-mod-http-xslt-filter-debuginfo to a version that resolves this vulnerability.

    Fixed in 1.26.3-6.el10_2.8.aa
  29. Upgrade

    Upgrade redhat/nginx-mod-mail to a version that resolves this vulnerability.

    Fixed in 1.26.3-6.el10_2.8.aa
  30. Upgrade

    Upgrade redhat/nginx-mod-mail-debuginfo to a version that resolves this vulnerability.

    Fixed in 1.26.3-6.el10_2.8.aa
  31. Upgrade

    Upgrade redhat/nginx-mod-stream to a version that resolves this vulnerability.

    Fixed in 1.26.3-6.el10_2.8.aa
  32. Upgrade

    Upgrade redhat/nginx-mod-stream-debuginfo to a version that resolves this vulnerability.

    Fixed in 1.26.3-6.el10_2.8.aa
  33. Upgrade

    Upgrade redhat/nginx-mod-devel to a version that resolves this vulnerability.

    Fixed in 1.26.3-6.el10_2.8
  34. Upgrade

    Upgrade redhat/nginx-mod-devel to a version that resolves this vulnerability.

    Fixed in 1.26.3-6.el10_2.8.aa

Event History

Nov 11, 2026
Advisory Published
via Red Hat·12:00 AM
Data Sourced
via Red Hat·12:00 AM
RemedyDescriptionAffected Software

Frequently Asked Questions

1

Which Red Hat packages are covered by this update?

The update covers redhat/nginx, redhat/nginx-core, redhat/nginx-core-debuginfo, redhat/nginx-debuginfo, redhat/nginx-debugsource, redhat/nginx-mod-http-image-filter, redhat/nginx-mod-http-image-filter-debuginfo, and redhat/nginx-mod-http-perl.

2

What configuration pattern is specifically associated with the buffer overflow?

CVE-2026-15176 is described as a heap-based buffer overflow in ngx_http_core_module involving an alias configuration used with a rewrite that references $request_filename.

3

Are mitigation steps available if the update cannot be applied immediately?

No mitigation or workaround is provided in the advisory data. The identified risky configuration pattern is an alias used with a rewrite referencing $request_filename.

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