{"id":"CVE-2026-56154","published":"2026-10-01T17:17:26.610","lastModified":"2026-10-05T13:33:38.377","description":"Use After Free vulnerability in Apache HTTP Server's mod_rewrite when using lookahead (%{LA-U:HTTP:...})\n\n\n\nThis issue affects Apache HTTP Server: from 2.4.0 through 2.4.68.","cvssScore":9.8,"cvssSeverity":"CRITICAL","cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","cwes":["CWE-416"],"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/2026/10/01/17","tags":["Mailing List","Third Party Advisory"]}],"exploitRefs":[],"hasPoc":false,"ai":{"summary":"A Use After Free vulnerability in mod_rewrite of Apache HTTP Server allows attackers to execute arbitrary code by manipulating lookahead patterns, leading to a critical security risk.","exploitability":"Exploitation is complex and requires specific conditions, including the use of lookahead patterns in mod_rewrite. Precondition is the presence of vulnerable mod_rewrite configuration.","blast_radius":"If exploited, this vulnerability could lead to complete system compromise, allowing attackers to execute arbitrary code on the server.","remediation":"Upgrade to Apache HTTP Server 2.4.69 or later.","detection":"No reliable host or network indicator is derivable from the published description.","tags":["rce","web","apache","mod_rewrite"],"model":"qwen2.5:7b-instruct","analyzedAt":"2026-10-02T08:41:36.223Z"}}