CVE-2026-56449 Apache HTTP Server: mod_proxy_html: crash in dump_content
An attacker can cause a denial of service in Apache HTTP Server by sending crafted HTTP response bodies to the mod_proxy_html module.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-56449?
CVE-2026-56449 is a high-severity memory corruption vulnerability in Apache Http Server, published on 1 Oct 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
Out-of-bounds Write vulnerability in Apache HTTP Server's mod_proxy_html with crafted HTTP response bodies.
This issue affects Apache HTTP Server version 2.4.68.
Weakness: CWE-787
Which versions are affected by CVE-2026-56449?
1 open source package ship an affected version, including apache. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
apache Bitnami | From 2.4.0 | 2.4.69 |
Linux distribution packages (20)
httpd Red Hat:enterprise_linux:10.2 | All versions | 0:2.4.63-13.el10_2.5 |
httpd-core Red Hat:enterprise_linux:10.2 | All versions | 0:2.4.63-13.el10_2.5 |
httpd-core-debuginfo Red Hat:enterprise_linux:10.2 | All versions | 0:2.4.63-13.el10_2.5 |
httpd-debuginfo Red Hat:enterprise_linux:10.2 | All versions | 0:2.4.63-13.el10_2.5 |
httpd-debugsource Red Hat:enterprise_linux:10.2 | All versions | 0:2.4.63-13.el10_2.5 |
httpd-devel Red Hat:enterprise_linux:10.2 | All versions | 0:2.4.63-13.el10_2.5 |
httpd-filesystem Red Hat:enterprise_linux:10.2 | All versions | 0:2.4.63-13.el10_2.5 |
httpd-manual Red Hat:enterprise_linux:10.2 | All versions | 0:2.4.63-13.el10_2.5 |
httpd-tools Red Hat:enterprise_linux:10.2 | All versions | 0:2.4.63-13.el10_2.5 |
httpd-tools-debuginfo Red Hat:enterprise_linux:10.2 | All versions | 0:2.4.63-13.el10_2.5 |
mod_ldap Red Hat:enterprise_linux:10.2 | All versions | 0:2.4.63-13.el10_2.5 |
mod_ldap-debuginfo Red Hat:enterprise_linux:10.2 | All versions | 0:2.4.63-13.el10_2.5 |
mod_lua Red Hat:enterprise_linux:10.2 | All versions | 0:2.4.63-13.el10_2.5 |
mod_lua-debuginfo Red Hat:enterprise_linux:10.2 | All versions | 0:2.4.63-13.el10_2.5 |
mod_proxy_html Red Hat:enterprise_linux:10.2 | All versions | 1:2.4.63-13.el10_2.5 |
mod_proxy_html-debuginfo Red Hat:enterprise_linux:10.2 | All versions | 1:2.4.63-13.el10_2.5 |
mod_session Red Hat:enterprise_linux:10.2 | All versions | 0:2.4.63-13.el10_2.5 |
mod_session-debuginfo Red Hat:enterprise_linux:10.2 | All versions | 0:2.4.63-13.el10_2.5 |
mod_ssl Red Hat:enterprise_linux:10.2 | All versions | 1:2.4.63-13.el10_2.5 |
mod_ssl-debuginfo Red Hat:enterprise_linux:10.2 | All versions | 1:2.4.63-13.el10_2.5 |
Products include Apache Http Server.
How do I fix CVE-2026-56449?
Upgrade apache to 2.4.69 or later.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2026-56449 being exploited?
There is no known exploitation of CVE-2026-56449 in the wild and no public exploit code.
Other vulnerabilities in Apache Http Server
Sources
Also known as ALPINE-CVE-2026-56449, AZL-106794, BELL-CVE-2026-56449, BIT-apache-2026-56449, DEBIAN-CVE-2026-56449, ECHO-f4b6-1ea9-1be2 and 5 more.