{"schema_version":"1.9.0","id":"BIT-apache-2026-28780","published":"2026-05-07T08:38:43.651Z","modified":"2026-09-08T08:45:31.126151086Z","aliases":["CVE-2026-28780"],"summary":"Apache HTTP Server: buffer overflow in mod_proxy_ajp via  ajp_msg_check_header()","details":"Heap-based Buffer Overflow vulnerability in mod_proxy_ajp of Apache HTTP Server.\nIf mod_proxy_ajp connects to a malicious AJP server this AJP server can send a malicious AJP message back to mod_proxy_ajp and cause it to write 4 attacker controlled bytes after the end of a heap based buffer.\n\nThis issue affects Apache HTTP Server: through 2.4.66.\n\nUsers are recommended to upgrade to version 2.4.67, which fixes the issue.","affected":[{"package":{"name":"apache","ecosystem":"Bitnami","purl":"pkg:bitnami/apache"},"ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"2.4.67"}]}],"database_specific":{"source":"https://github.com/bitnami/vulndb/tree/main/data/apache/BIT-apache-2026-28780.json"},"severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"}]}],"references":[{"type":"ADVISORY","url":"http://www.openwall.com/lists/oss-security/2026/05/05/9"},{"type":"ADVISORY","url":"https://httpd.apache.org/security/vulnerabilities_24.html"},{"type":"WEB","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-28780"},{"type":"WEB","url":"https://access.redhat.com/errata/RHSA-2026:21391"},{"type":"WEB","url":"https://access.redhat.com/errata/RHSA-2026:21433"},{"type":"WEB","url":"https://access.redhat.com/errata/RHSA-2026:22140"},{"type":"WEB","url":"https://access.redhat.com/errata/RHSA-2026:27200"},{"type":"WEB","url":"https://access.redhat.com/errata/RHSA-2026:27201"},{"type":"WEB","url":"https://access.redhat.com/security/cve/CVE-2026-28780"},{"type":"WEB","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2466913"},{"type":"WEB","url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-28780.json"},{"type":"WEB","url":"https://access.redhat.com/errata/RHSA-2026:36373"},{"type":"WEB","url":"https://access.redhat.com/errata/RHSA-2026:36831"},{"type":"WEB","url":"https://access.redhat.com/errata/RHSA-2026:36846"},{"type":"WEB","url":"https://access.redhat.com/errata/RHSA-2026:47046"},{"type":"WEB","url":"https://access.redhat.com/errata/RHSA-2026:62165"}],"database_specific":{"cpes":["cpe:2.3:a:apache:http_server:*:*:*:*:*:*:*:*"],"severity":"Critical"}}