Medium ELSA-2026-22551 1 CVE

Moderate: mod_http2 security update (Oracle Linux 9)

Published Jun 26, 2026 · Updated Jun 26, 2026

Ecosystem: Oracle Linux

Summary

[2.0.26-6.1]
- Resolves: RHEL-182417 - mod_http2: HTTP/2: Remote Denial of Service via
compression bomb and Slowloris-style attack (CVE-2026-49975)

[2.0.26-6]
- Resolves: RHEL-166293 - httpd: Apache HTTP Server: HTTP/2 DoS by Memory
Increase (CVE-2025-53020)

Fixed packages 1

Release	Package	Fixed in
Oracle Linux · 9	mod_http2	0:2.0.26-6.el9_8.1

Vulnerabilities 1

High 7.5

CVE-2025-53020 Public exploit

Apache HTTP Server: HTTP/2 DoS by Memory Increase

Late Release of Memory after Effective Lifetime vulnerability in Apache HTTP Server. This issue affects Apache HTTP Server: from 2.4.17 up to 2.4.63. Users are recommended to upgrade to version 2.4.64, which fixes the issue.

Apache Software Foundation Apache HTTP Server apache2 apache2 Debian Ubuntu Azure Linux Alpine

Jul 10, 2025