Issued:
2026-07-07
Updated:
2026-07-07

RHSA-2026:36373 - Important: httpd:2.4 security update

Synopsis

Important: httpd:2.4 security update

Type/Severity

Security Advisory Important

Topic

An update for the httpd:2.4 module is now available for Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions and Red Hat Enterprise Linux 8.8 Telecommunications Update Service.

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

The httpd packages provide the Apache HTTP Server, a powerful, efficient, and extensible web server.

Security Fix(es):

  • httpd: Apache HTTP Server: HTTP/2 DoS by Memory Increase (CVE-2025-53020)

  • httpd: mod_proxy_ajp: heap-based buffer over-read and memory disclosure in ajp_parse_data() (CVE-2026-34059)

  • httpd: mod_proxy_ajp: heap-based buffer over-read due to missing null-termination check (CVE-2026-34032)

  • httpd: mod_proxy_ajp: off-by-one out-of-bounds reads in AJP getter functions (CVE-2026-33857)

  • httpd: mod_authn_socache: NULL pointer dereference can cause a child process crash (CVE-2026-33007)

  • Apache HTTP Server: mod_proxy_ajp: Apache HTTP Server mod_proxy_ajp: Arbitrary code execution via heap-based buffer overflow (CVE-2026-28780)

  • httpd: HTTP/2: Remote Denial of Service via compression bomb and Slowloris-style attack (CVE-2026-49975)

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

ProductVersionArch
Red Hat Enterprise Linux for x86_64 - Update Services for SAP Solutions8.8x86_64
Red Hat Enterprise Linux for x86_64 - Extended Update Support Extension8.8x86_64
Red Hat Enterprise Linux Server for Power LE - Update Services for SAP Solutions8.8ppc64le
Red Hat Enterprise Linux Server - TUS8.8x86_64

Updated Packages

  • httpd-2.4.37-56.module+el8.8.0+24497+e470c0e2.12.src.rpm
  • mod_md-debuginfo-2.0.8-8.module+el8.8.0+23840+d7e7db80.1.ppc64le.rpm
  • mod_ldap-2.4.37-56.module+el8.8.0+24497+e470c0e2.12.ppc64le.rpm
  • mod_http2-1.15.7-8.module+el8.8.0+24497+e470c0e2.7.src.rpm
  • mod_ldap-debuginfo-2.4.37-56.module+el8.8.0+24497+e470c0e2.12.ppc64le.rpm
  • mod_md-2.0.8-8.module+el8.8.0+23840+d7e7db80.1.ppc64le.rpm
  • httpd-devel-2.4.37-56.module+el8.8.0+24497+e470c0e2.12.ppc64le.rpm
  • mod_session-2.4.37-56.module+el8.8.0+24497+e470c0e2.12.ppc64le.rpm
  • httpd-tools-debuginfo-2.4.37-56.module+el8.8.0+24497+e470c0e2.12.ppc64le.rpm
  • httpd-2.4.37-56.module+el8.8.0+24497+e470c0e2.12.ppc64le.rpm
  • httpd-tools-2.4.37-56.module+el8.8.0+24497+e470c0e2.12.ppc64le.rpm
  • mod_md-debugsource-2.0.8-8.module+el8.8.0+23840+d7e7db80.1.ppc64le.rpm
  • httpd-filesystem-2.4.37-56.module+el8.8.0+24497+e470c0e2.12.noarch.rpm
  • mod_proxy_html-2.4.37-56.module+el8.8.0+24497+e470c0e2.12.ppc64le.rpm
  • mod_http2-debugsource-1.15.7-8.module+el8.8.0+24497+e470c0e2.7.ppc64le.rpm
  • mod_session-debuginfo-2.4.37-56.module+el8.8.0+24497+e470c0e2.12.ppc64le.rpm
  • httpd-manual-2.4.37-56.module+el8.8.0+24497+e470c0e2.12.noarch.rpm
  • mod_ssl-2.4.37-56.module+el8.8.0+24497+e470c0e2.12.ppc64le.rpm
  • mod_proxy_html-debuginfo-2.4.37-56.module+el8.8.0+24497+e470c0e2.12.ppc64le.rpm
  • mod_http2-1.15.7-8.module+el8.8.0+24497+e470c0e2.7.ppc64le.rpm
  • mod_http2-debuginfo-1.15.7-8.module+el8.8.0+24497+e470c0e2.7.ppc64le.rpm
  • mod_ssl-debuginfo-2.4.37-56.module+el8.8.0+24497+e470c0e2.12.ppc64le.rpm
  • httpd-debugsource-2.4.37-56.module+el8.8.0+24497+e470c0e2.12.ppc64le.rpm
  • mod_md-2.0.8-8.module+el8.8.0+23840+d7e7db80.1.src.rpm
  • httpd-debuginfo-2.4.37-56.module+el8.8.0+24497+e470c0e2.12.ppc64le.rpm
  • mod_http2-1.15.7-8.module+el8.8.0+24497+e470c0e2.7.x86_64.rpm
  • mod_ssl-2.4.37-56.module+el8.8.0+24497+e470c0e2.12.x86_64.rpm
  • httpd-tools-2.4.37-56.module+el8.8.0+24497+e470c0e2.12.x86_64.rpm
  • httpd-debugsource-2.4.37-56.module+el8.8.0+24497+e470c0e2.12.x86_64.rpm
  • mod_ldap-debuginfo-2.4.37-56.module+el8.8.0+24497+e470c0e2.12.x86_64.rpm
  • mod_ssl-debuginfo-2.4.37-56.module+el8.8.0+24497+e470c0e2.12.x86_64.rpm
  • httpd-debuginfo-2.4.37-56.module+el8.8.0+24497+e470c0e2.12.x86_64.rpm
  • httpd-devel-2.4.37-56.module+el8.8.0+24497+e470c0e2.12.x86_64.rpm
  • mod_session-debuginfo-2.4.37-56.module+el8.8.0+24497+e470c0e2.12.x86_64.rpm
  • httpd-2.4.37-56.module+el8.8.0+24497+e470c0e2.12.x86_64.rpm
  • mod_md-2.0.8-8.module+el8.8.0+23840+d7e7db80.1.x86_64.rpm
  • mod_session-2.4.37-56.module+el8.8.0+24497+e470c0e2.12.x86_64.rpm
  • mod_http2-debugsource-1.15.7-8.module+el8.8.0+24497+e470c0e2.7.x86_64.rpm
  • mod_http2-debuginfo-1.15.7-8.module+el8.8.0+24497+e470c0e2.7.x86_64.rpm
  • mod_md-debuginfo-2.0.8-8.module+el8.8.0+23840+d7e7db80.1.x86_64.rpm
  • mod_ldap-2.4.37-56.module+el8.8.0+24497+e470c0e2.12.x86_64.rpm
  • httpd-tools-debuginfo-2.4.37-56.module+el8.8.0+24497+e470c0e2.12.x86_64.rpm
  • mod_md-debugsource-2.0.8-8.module+el8.8.0+23840+d7e7db80.1.x86_64.rpm
  • mod_proxy_html-2.4.37-56.module+el8.8.0+24497+e470c0e2.12.x86_64.rpm
  • mod_proxy_html-debuginfo-2.4.37-56.module+el8.8.0+24497+e470c0e2.12.x86_64.rpm

Fixes

CVEs

References

Additional information