{"id":"ALSA-2021:3816","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: mod_proxy: SSRF via a crafted request uri-path containing \"unix:\" (CVE-2021-40438)\n\n* httpd: mod_session: Heap overflow via a crafted SessionHeader value (CVE-2021-26691)\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.","modified":"2026-01-30T01:33:14.044255Z","published":"2021-10-12T15:53:03Z","related":["CVE-2021-26691","CVE-2021-40438"],"references":[{"type":"ADVISORY","url":"https://errata.almalinux.org/8/ALSA-2021-3816.html"},{"type":"REPORT","url":"https://vulners.com/cve/CVE-2021-26691"},{"type":"REPORT","url":"https://vulners.com/cve/CVE-2021-40438"}],"affected":[{"package":{"name":"mod_http2","ecosystem":"AlmaLinux:8","purl":"pkg:rpm/almalinux/mod_http2"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.15.7-3.module_el8.5.0+2609+b30d9eec"}]}],"database_specific":{"source":"https://github.com/AlmaLinux/osv-database/blob/master/advisories/almalinux8/ALSA-2021:3816.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_el8.5.0+2609+b30d9eec"}]}],"database_specific":{"source":"https://github.com/AlmaLinux/osv-database/blob/master/advisories/almalinux8/ALSA-2021:3816.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_el8.6.0+2872+fe0ff7aa"}]}],"database_specific":{"source":"https://github.com/AlmaLinux/osv-database/blob/master/advisories/almalinux8/ALSA-2021:3816.json"}}],"schema_version":"1.7.3"}