CVE-2026-46729

Apache HTTP Server: mod_heartmonitor denial of service

Apache Software Foundation Apache HTTP ServerWeb servers

CVSS

7.5High

ExploitationNo known exploitationNot in CISA KEV, which does not prove it is unexploitedCISA KEV

Exploit odds (EPSS)0.47%Chance of exploitation activity in the next 30 days, higher than 39% of CVEs. Scored 23 Oct 2026FIRST EPSS

Fixed inNone listedNo source names a fixed version. Check the vendor advisory below

Published1 Oct 2026Updated 1 Oct 2026CVE List

What fixes it

No source in this snapshot names a fixed version. The vendor advisories under References are the place to check.

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.

Text from CVE List