{"id":"CVE-2026-46729","published":"2026-10-01T16:17:44.293","lastModified":"2026-10-08T00:47:12.233","description":"NULL Pointer Dereference vulnerability in Apache HTTP Servers mod_heartmonitor over unicast listener.\n\n\n\nThis issue affects Apache HTTP Server: from 2.4.0 through 2.4.68.","cvssScore":7.5,"cvssSeverity":"HIGH","cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","cwes":["CWE-476"],"vendors":["apache"],"products":["http server"],"references":[{"url":"https://httpd.apache.org/security/vulnerabilities_24.html","tags":["Vendor Advisory"]},{"url":"http://www.openwall.com/lists/oss-security/2026/10/01/13","tags":["Mailing List","Third Party Advisory"]}],"exploitRefs":[],"hasPoc":false,"ai":{"summary":"A NULL pointer dereference vulnerability in Apache HTTP Server's mod_heartmonitor module allows attackers to cause the server to crash via an unicast listener, leading to a denial of service condition. This affects versions 2.4.0 through 2.4.68 and can be exploited by sending specially crafted requests to the heartmonitor endpoint.","exploitability":"Exploitation is relatively straightforward as it requires only sending malformed requests to the unicast listener endpoint, with no authentication or complex preconditions needed.","blast_radius":"The impact could affect all users of the affected Apache versions, potentially causing widespread service disruption if attackers repeatedly exploit this vulnerability.","remediation":"Upgrade to Apache HTTP Server 2.4.69 or later to remediate this NULL pointer dereference vulnerability.","detection":"No reliable host or network indicator is derivable from the published description.","tags":["denial-of-service","http","apache","heartmonitor"],"model":"garnet-coder","analyzedAt":"2026-10-13T09:05:14.214Z"}}