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

Published Jul 7, 2026
·
Updated

Important: httpd:2.4 security update

Other sources

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: modproxyajp: heap-based buffer over-read and memory disclosure in ajpparsedata() (CVE-2026-34059) httpd: modproxyajp: heap-based buffer over-read due to missing null-termination check (CVE-2026-34032) httpd: modproxyajp: off-by-one out-of-bounds reads in AJP getter functions (CVE-2026-33857) httpd: modauthnsocache: NULL pointer dereference can cause a child process crash (CVE-2026-33007) Apache HTTP Server: modproxyajp: Apache HTTP Server modproxyajp: 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.

— Red Hat

Affected Software

19 affected componentsFixes available
Red Hat Red Hat Enterprise Linux Server - TUS
Red Hat Red Hat Enterprise Linux for x86_64 - Update Services for SAP Solutions
Red Hat Red Hat Enterprise Linux Server for Power LE - Update Services for SAP Solutions
Red Hat Red Hat Enterprise Linux for x86_64 - Extended Update Support Extension
redhat/httpd<2.4.37-56.module+el8.8.0+24497+e470c0e2.12
2.4.37-56.module+el8.8.0+24497+e470c0e2.12
redhat/httpd-filesystem<2.4.37-56.module+el8.8.0+24497+e470c0e2.12
2.4.37-56.module+el8.8.0+24497+e470c0e2.12
redhat/httpd-manual<2.4.37-56.module+el8.8.0+24497+e470c0e2.12
2.4.37-56.module+el8.8.0+24497+e470c0e2.12
redhat/httpd<2.4.37-56.module+el8.8.0+24497+e470c0e2.12
2.4.37-56.module+el8.8.0+24497+e470c0e2.12
redhat/httpd-debuginfo<2.4.37-56.module+el8.8.0+24497+e470c0e2.12
2.4.37-56.module+el8.8.0+24497+e470c0e2.12
redhat/httpd-debugsource<2.4.37-56.module+el8.8.0+24497+e470c0e2.12
2.4.37-56.module+el8.8.0+24497+e470c0e2.12
redhat/httpd-devel<2.4.37-56.module+el8.8.0+24497+e470c0e2.12
2.4.37-56.module+el8.8.0+24497+e470c0e2.12
redhat/httpd-tools<2.4.37-56.module+el8.8.0+24497+e470c0e2.12
2.4.37-56.module+el8.8.0+24497+e470c0e2.12
redhat/httpd-tools-debuginfo<2.4.37-56.module+el8.8.0+24497+e470c0e2.12
2.4.37-56.module+el8.8.0+24497+e470c0e2.12
redhat/httpd<2.4.37-56.module+el8.8.0+24497+e470c0e2.12
2.4.37-56.module+el8.8.0+24497+e470c0e2.12
redhat/httpd-debuginfo<2.4.37-56.module+el8.8.0+24497+e470c0e2.12
2.4.37-56.module+el8.8.0+24497+e470c0e2.12
redhat/httpd-debugsource<2.4.37-56.module+el8.8.0+24497+e470c0e2.12
2.4.37-56.module+el8.8.0+24497+e470c0e2.12
redhat/httpd-devel<2.4.37-56.module+el8.8.0+24497+e470c0e2.12
2.4.37-56.module+el8.8.0+24497+e470c0e2.12
redhat/httpd-tools<2.4.37-56.module+el8.8.0+24497+e470c0e2.12
2.4.37-56.module+el8.8.0+24497+e470c0e2.12
redhat/httpd-tools-debuginfo<2.4.37-56.module+el8.8.0+24497+e470c0e2.12
2.4.37-56.module+el8.8.0+24497+e470c0e2.12

Remediation

Recommended actions to resolve this vulnerability, in priority order.

  1. Upgrade

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

    Fixed in 2.4.37-56.module+el8.8.0+24497+e470c0e2.12
  2. Upgrade

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

    Fixed in 2.4.37-56.module+el8.8.0+24497+e470c0e2.12
  3. Upgrade

    Upgrade redhat/httpd-manual to a version that resolves this vulnerability.

    Fixed in 2.4.37-56.module+el8.8.0+24497+e470c0e2.12
  4. Upgrade

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

    Fixed in 2.4.37-56.module+el8.8.0+24497+e470c0e2.12
  5. Upgrade

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

    Fixed in 2.4.37-56.module+el8.8.0+24497+e470c0e2.12
  6. Upgrade

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

    Fixed in 2.4.37-56.module+el8.8.0+24497+e470c0e2.12
  7. Upgrade

    Upgrade redhat/httpd-tools to a version that resolves this vulnerability.

    Fixed in 2.4.37-56.module+el8.8.0+24497+e470c0e2.12
  8. Upgrade

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

    Fixed in 2.4.37-56.module+el8.8.0+24497+e470c0e2.12
  9. Upgrade

    Upgrade httpd to a version that resolves this vulnerability.

    Fixed in 2.4.37-56.module+el8.8.0+24497+e470c0e2.12
  10. Upgrade

    Upgrade mod_http2 to a version that resolves this vulnerability.

    Fixed in 1.15.7-8.module+el8.8.0+24497+e470c0e2.7
  11. Upgrade

    Upgrade mod_ldap to a version that resolves this vulnerability.

    Fixed in 2.4.37-56.module+el8.8.0+24497+e470c0e2.12
  12. Upgrade

    Upgrade mod_md to a version that resolves this vulnerability.

    Fixed in 2.0.8-8.module+el8.8.0+23840+d7e7db80.1
  13. Upgrade

    Upgrade mod_proxy_html to a version that resolves this vulnerability.

    Fixed in 2.4.37-56.module+el8.8.0+24497+e470c0e2.12
  14. Upgrade

    Upgrade mod_session to a version that resolves this vulnerability.

    Fixed in 2.4.37-56.module+el8.8.0+24497+e470c0e2.12
  15. Upgrade

    Upgrade mod_ssl to a version that resolves this vulnerability.

    Fixed in 2.4.37-56.module+el8.8.0+24497+e470c0e2.12

Event History

Jul 7, 2026
Advisory Published
via Red Hat·09:27 PM
Data Sourced
via Red Hat·09:27 PM
DescriptionSeverityAffected Software
Jul 30, 2026
Advisory Published
via Red Hat·10:54 PM
Data Sourced
via Red Hat·10:54 PM
Remedy
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Frequently Asked Questions

1

What is the severity of RHSA-2026:36373?

The severity of RHSA-2026:36373 is classified as high, with a CVSS score of 7.

2

How do I fix RHSA-2026:36373?

To fix RHSA-2026:36373, update your httpd packages to the latest version provided by Red Hat.

3

What are the main vulnerabilities addressed in RHSA-2026:36373?

RHSA-2026:36373 addresses vulnerabilities such as a HTTP/2 Denial of Service due to memory increase and mod_proxy_ajp heap-based buffer over-read.

4

Which software is affected by RHSA-2026:36373?

RHSA-2026:36373 affects several Red Hat httpd packages including redhat/httpd and redhat/httpd-tools.

5

Is a reboot required after applying the fix for RHSA-2026:36373?

A reboot is not typically required after applying the fix for RHSA-2026:36373, but verify your application's stability post-update.

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