{"id":"ALSA-2021:4257","summary":"Moderate: httpd:2.4 security, bug fix, and enhancement 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_session: NULL pointer dereference when parsing Cookie header (CVE-2021-26690)\n\n* httpd: Unexpected URL matching with 'MergeSlashes OFF' (CVE-2021-30641)\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\nAdditional Changes:\n\nFor detailed information on changes in this release, see the AlmaLinux Release Notes linked from the References section.","modified":"2026-01-30T02:35:34.379402Z","published":"2021-11-09T08:52:38Z","related":["CVE-2021-26690","CVE-2021-30641"],"references":[{"type":"ADVISORY","url":"https://errata.almalinux.org/8/ALSA-2021-4257.html"},{"type":"REPORT","url":"https://vulners.com/cve/CVE-2021-26690"},{"type":"REPORT","url":"https://vulners.com/cve/CVE-2021-30641"}],"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-2021:4257.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-2021:4257.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-2021:4257.json"}}],"schema_version":"1.7.3"}