{"id":"ALSA-2026:22140","summary":"Important: httpd:2.4 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: Apache HTTP Server: HTTP/2 DoS by Memory Increase (CVE-2025-53020)\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":"2026-06-03T14:03:35.375490227Z","published":"2026-06-01T00:00:00Z","related":["CVE-2025-53020","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-2026:22140"},{"type":"REPORT","url":"https://access.redhat.com/security/cve/CVE-2025-53020"},{"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/2379343"},{"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/8/ALSA-2026-22140.html"}],"affected":[{"package":{"name":"httpd","ecosystem":"AlmaLinux:8","purl":"pkg:rpm/almalinux/httpd"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.4.37-65.module_el8.10.0+4185+0955a0d7.8"}]}],"database_specific":{"source":"https://github.com/AlmaLinux/osv-database/blob/master/advisories/almalinux8/ALSA-2026:22140.json"}},{"package":{"name":"httpd-devel","ecosystem":"AlmaLinux:8","purl":"pkg:rpm/almalinux/httpd-devel"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.4.37-65.module_el8.10.0+4185+0955a0d7.8"}]}],"database_specific":{"source":"https://github.com/AlmaLinux/osv-database/blob/master/advisories/almalinux8/ALSA-2026:22140.json"}},{"package":{"name":"httpd-filesystem","ecosystem":"AlmaLinux:8","purl":"pkg:rpm/almalinux/httpd-filesystem"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.4.37-65.module_el8.10.0+4185+0955a0d7.8"}]}],"database_specific":{"source":"https://github.com/AlmaLinux/osv-database/blob/master/advisories/almalinux8/ALSA-2026:22140.json"}},{"package":{"name":"httpd-manual","ecosystem":"AlmaLinux:8","purl":"pkg:rpm/almalinux/httpd-manual"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.4.37-65.module_el8.10.0+4185+0955a0d7.8"}]}],"database_specific":{"source":"https://github.com/AlmaLinux/osv-database/blob/master/advisories/almalinux8/ALSA-2026:22140.json"}},{"package":{"name":"httpd-tools","ecosystem":"AlmaLinux:8","purl":"pkg:rpm/almalinux/httpd-tools"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.4.37-65.module_el8.10.0+4185+0955a0d7.8"}]}],"database_specific":{"source":"https://github.com/AlmaLinux/osv-database/blob/master/advisories/almalinux8/ALSA-2026:22140.json"}},{"package":{"name":"mod_http2","ecosystem":"AlmaLinux:8","purl":"pkg:rpm/almalinux/mod_http2"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.15.7-10.module_el8.10.0+4185+0955a0d7.5"}]}],"database_specific":{"source":"https://github.com/AlmaLinux/osv-database/blob/master/advisories/almalinux8/ALSA-2026:22140.json"}},{"package":{"name":"mod_ldap","ecosystem":"AlmaLinux:8","purl":"pkg:rpm/almalinux/mod_ldap"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.4.37-65.module_el8.10.0+4185+0955a0d7.8"}]}],"database_specific":{"source":"https://github.com/AlmaLinux/osv-database/blob/master/advisories/almalinux8/ALSA-2026:22140.json"}},{"package":{"name":"mod_md","ecosystem":"AlmaLinux:8","purl":"pkg:rpm/almalinux/mod_md"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1:2.0.8-8.module_el8.10.0+4088+57f011c1.2"}]}],"database_specific":{"source":"https://github.com/AlmaLinux/osv-database/blob/master/advisories/almalinux8/ALSA-2026:22140.json"}},{"package":{"name":"mod_proxy_html","ecosystem":"AlmaLinux:8","purl":"pkg:rpm/almalinux/mod_proxy_html"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1:2.4.37-65.module_el8.10.0+4185+0955a0d7.8"}]}],"database_specific":{"source":"https://github.com/AlmaLinux/osv-database/blob/master/advisories/almalinux8/ALSA-2026:22140.json"}},{"package":{"name":"mod_session","ecosystem":"AlmaLinux:8","purl":"pkg:rpm/almalinux/mod_session"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.4.37-65.module_el8.10.0+4185+0955a0d7.8"}]}],"database_specific":{"source":"https://github.com/AlmaLinux/osv-database/blob/master/advisories/almalinux8/ALSA-2026:22140.json"}},{"package":{"name":"mod_ssl","ecosystem":"AlmaLinux:8","purl":"pkg:rpm/almalinux/mod_ssl"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1:2.4.37-65.module_el8.10.0+4185+0955a0d7.8"}]}],"database_specific":{"source":"https://github.com/AlmaLinux/osv-database/blob/master/advisories/almali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