{"id":"ALSA-2026:21433","summary":"Important: httpd security update","details":"The httpd packages provide the Apache HTTP Server, a powerful, efficient, and extensible web server.  \n\nSecurity Fix(es):  \n\n  * httpd: mod_proxy_ajp: heap-based buffer over-read and memory disclosure in ajp_parse_data() (CVE-2026-34059)\n  * httpd: mod_proxy_ajp: heap-based buffer over-read due to missing null-termination check (CVE-2026-34032)\n  * httpd: mod_proxy_ajp: off-by-one out-of-bounds reads in AJP getter functions (CVE-2026-33857)\n  * httpd: mod_authn_socache: NULL pointer dereference can cause a child process crash (CVE-2026-33007)\n  * Apache HTTP Server: mod_proxy_ajp: Apache HTTP Server mod_proxy_ajp: Arbitrary code execution via heap-based buffer overflow (CVE-2026-28780)\n\n\nFor more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.\n","modified":"2026-05-28T13:44:30.806912507Z","published":"2026-05-27T00:00:00Z","related":["CVE-2026-28780","CVE-2026-33007","CVE-2026-33857","CVE-2026-34032","CVE-2026-34059"],"references":[{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:21433"},{"type":"REPORT","url":"https://access.redhat.com/security/cve/CVE-2026-28780"},{"type":"REPORT","url":"https://access.redhat.com/security/cve/CVE-2026-33007"},{"type":"REPORT","url":"https://access.redhat.com/security/cve/CVE-2026-33857"},{"type":"REPORT","url":"https://access.redhat.com/security/cve/CVE-2026-34032"},{"type":"REPORT","url":"https://access.redhat.com/security/cve/CVE-2026-34059"},{"type":"REPORT","url":"https://bugzilla.redhat.com/2464940"},{"type":"REPORT","url":"https://bugzilla.redhat.com/2464952"},{"type":"REPORT","url":"https://bugzilla.redhat.com/2464953"},{"type":"REPORT","url":"https://bugzilla.redhat.com/2465299"},{"type":"REPORT","url":"https://bugzilla.redhat.com/2466913"},{"type":"ADVISORY","url":"https://errata.almalinux.org/10/ALSA-2026-21433.html"}],"affected":[{"package":{"name":"httpd","ecosystem":"AlmaLinux:10","purl":"pkg:rpm/almalinux/httpd"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.4.63-13.el10_2.1"}]}],"database_specific":{"source":"https://github.com/AlmaLinux/osv-database/blob/master/advisories/almalinux10/ALSA-2026:21433.json"}},{"package":{"name":"httpd-core","ecosystem":"AlmaLinux:10","purl":"pkg:rpm/almalinux/httpd-core"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.4.63-13.el10_2.1"}]}],"database_specific":{"source":"https://github.com/AlmaLinux/osv-database/blob/master/advisories/almalinux10/ALSA-2026:21433.json"}},{"package":{"name":"httpd-devel","ecosystem":"AlmaLinux:10","purl":"pkg:rpm/almalinux/httpd-devel"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.4.63-13.el10_2.1"}]}],"database_specific":{"source":"https://github.com/AlmaLinux/osv-database/blob/master/advisories/almalinux10/ALSA-2026:21433.json"}},{"package":{"name":"httpd-filesystem","ecosystem":"AlmaLinux:10","purl":"pkg:rpm/almalinux/httpd-filesystem"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.4.63-13.el10_2.1"}]}],"database_specific":{"source":"https://github.com/AlmaLinux/osv-database/blob/master/advisories/almalinux10/ALSA-2026:21433.json"}},{"package":{"name":"httpd-manual","ecosystem":"AlmaLinux:10","purl":"pkg:rpm/almalinux/httpd-manual"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.4.63-13.el10_2.1"}]}],"database_specific":{"source":"https://github.com/AlmaLinux/osv-database/blob/master/advisories/almalinux10/ALSA-2026:21433.json"}},{"package":{"name":"httpd-tools","ecosystem":"AlmaLinux:10","purl":"pkg:rpm/almalinux/httpd-tools"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.4.63-13.el10_2.1"}]}],"database_specific":{"source":"https://github.com/AlmaLinux/osv-database/blob/master/advisories/almalinux10/ALSA-2026:21433.json"}},{"package":{"name":"mod_ldap","ecosystem":"AlmaLinux:10","purl":"pkg:rpm/almalinux/mod_ldap"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.4.63-13.el10_2.1"}]}],"database_specific":{"source":"https://github.com/AlmaLinux/osv-database/blob/master/advisories/almalinux10/ALSA-2026:21433.json"}},{"package":{"name":"mod_lua","ecosystem":"AlmaLinux:10","purl":"pkg:rpm/almalinux/mod_lua"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.4.63-13.el10_2.1"}]}],"database_specific":{"source":"https://github.com/AlmaLinux/osv-database/blob/master/advisories/almalinux10/ALSA-2026:21433.json"}},{"package":{"name":"mod_proxy_html","ecosystem":"AlmaLinux:10","purl":"pkg:rpm/almalinux/mod_proxy_html"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1:2.4.63-13.el10_2.1"}]}],"database_specific":{"source":"https://github.com/AlmaLinux/osv-database/blob/master/advisories/almalinux10/ALSA-2026:21433.json"}},{"package":{"name":"mod_session","ecosystem":"AlmaLinux:10","purl":"pkg:rpm/almalinux/mod_session"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.4.63-13.el10_2.1"}]}],"database_specific":{"source":"https://github.com/AlmaLinux/osv-database/blob/master/advisories/almalinux10/ALSA-2026:21433.json"}},{"package":{"name":"mod_ssl","ecosystem":"AlmaLinux:10","purl":"pkg:rpm/almalinux/mod_ssl"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1:2.4.63-13.el10_2.1"}]}],"database_specific":{"source":"https://github.com/AlmaLinux/osv-database/blob/master/advisories/almalinux10/ALSA-2026:21433.json"}}],"schema_version":"1.7.5"}