CVE-2026-46729 Apache HTTP Server: mod_heartmonitor denial of service
A NULL pointer dereference in Apache HTTP Server's mod_heartmonitor module allows attackers to cause a denial of service via unicast listener requests.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-46729?
CVE-2026-46729 is a high-severity 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
NULL Pointer Dereference vulnerability in Apache HTTP Servers mod_heartmonitor over unicast listener.
This issue affects Apache HTTP Server: from 2.4.0 through 2.4.68.
Weakness: CWE-476
Which versions are affected by CVE-2026-46729?
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 |
Products include Apache Http Server.
How do I fix CVE-2026-46729?
Upgrade apache to 2.4.69 or later.
Is CVE-2026-46729 being exploited?
There is no known exploitation of CVE-2026-46729 in the wild and no public exploit code.
Other vulnerabilities in Apache Http Server
Sources
Also known as ALPINE-CVE-2026-46729, AZL-106788, BELL-CVE-2026-46729, BIT-apache-2026-46729, CLSA-2026-1791552379, CLSA-2026-1791552547 and 6 more.