{"id":"ALSA-2026:36639","summary":"Important: nginx:1.26 security, bug fix, and enhancement update","details":"nginx is a web and proxy server supporting HTTP and other protocols, with a focus on high concurrency, performance, and low memory usage.   \n\nSecurity Fix(es):  \n\n  * nginx: NGINX: Arbitrary code execution or Denial of Service via heap-based buffer overflow with crafted HTTP/2 headers (CVE-2026-42055)\n\n\nBug Fix(es) and Enhancement(s):  \n\n  * nginx:1.26/nginx: \"HTTP/2 bomb\" nginx fix breaks module ABI causing crashes [almalinux-9.8.z] (JIRA:AlmaLinux-191774)\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":"2026-07-09T14:00:05.759133886Z","published":"2026-07-08T00:00:00Z","related":["CVE-2026-42055"],"references":[{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:36639"},{"type":"REPORT","url":"https://access.redhat.com/security/cve/CVE-2026-42055"},{"type":"REPORT","url":"https://bugzilla.redhat.com/2489866"},{"type":"ADVISORY","url":"https://errata.almalinux.org/9/ALSA-2026-36639.html"}],"affected":[{"package":{"name":"nginx","ecosystem":"AlmaLinux:9","purl":"pkg:rpm/almalinux/nginx"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2:1.26.3-9.module_el9.8.0+281+75d5e6d4.2"}]}],"database_specific":{"source":"https://github.com/AlmaLinux/osv-database/blob/master/advisories/almalinux9/ALSA-2026:36639.json"}},{"package":{"name":"nginx-all-modules","ecosystem":"AlmaLinux:9","purl":"pkg:rpm/almalinux/nginx-all-modules"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2:1.26.3-9.module_el9.8.0+281+75d5e6d4.2"}]}],"database_specific":{"source":"https://github.com/AlmaLinux/osv-database/blob/master/advisories/almalinux9/ALSA-2026:36639.json"}},{"package":{"name":"nginx-core","ecosystem":"AlmaLinux:9","purl":"pkg:rpm/almalinux/nginx-core"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2:1.26.3-9.module_el9.8.0+281+75d5e6d4.2"}]}],"database_specific":{"source":"https://github.com/AlmaLinux/osv-database/blob/master/advisories/almalinux9/ALSA-2026:36639.json"}},{"package":{"name":"nginx-filesystem","ecosystem":"AlmaLinux:9","purl":"pkg:rpm/almalinux/nginx-filesystem"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2:1.26.3-9.module_el9.8.0+281+75d5e6d4.2"}]}],"database_specific":{"source":"https://github.com/AlmaLinux/osv-database/blob/master/advisories/almalinux9/ALSA-2026:36639.json"}},{"package":{"name":"nginx-mod-devel","ecosystem":"AlmaLinux:9","purl":"pkg:rpm/almalinux/nginx-mod-devel"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2:1.26.3-9.module_el9.8.0+281+75d5e6d4.2"}]}],"database_specific":{"source":"https://github.com/AlmaLinux/osv-database/blob/master/advisories/almalinux9/ALSA-2026:36639.json"}},{"package":{"name":"nginx-mod-http-image-filter","ecosystem":"AlmaLinux:9","purl":"pkg:rpm/almalinux/nginx-mod-http-image-filter"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2:1.26.3-9.module_el9.8.0+281+75d5e6d4.2"}]}],"database_specific":{"source":"https://github.com/AlmaLinux/osv-database/blob/master/advisories/almalinux9/ALSA-2026:36639.json"}},{"package":{"name":"nginx-mod-http-perl","ecosystem":"AlmaLinux:9","purl":"pkg:rpm/almalinux/nginx-mod-http-perl"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2:1.26.3-9.module_el9.8.0+281+75d5e6d4.2"}]}],"database_specific":{"source":"https://github.com/AlmaLinux/osv-database/blob/master/advisories/almalinux9/ALSA-2026:36639.json"}},{"package":{"name":"nginx-mod-http-xslt-filter","ecosystem":"AlmaLinux:9","purl":"pkg:rpm/almalinux/nginx-mod-http-xslt-filter"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2:1.26.3-9.module_el9.8.0+281+75d5e6d4.2"}]}],"database_specific":{"source":"https://github.com/AlmaLinux/osv-database/blob/master/advisories/almalinux9/ALSA-2026:36639.json"}},{"package":{"name":"nginx-mod-mail","ecosystem":"AlmaLinux:9","purl":"pkg:rpm/almalinux/nginx-mod-mail"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2:1.26.3-9.module_el9.8.0+281+75d5e6d4.2"}]}],"database_specific":{"source":"https://github.com/AlmaLinux/osv-database/blob/master/advisories/almalinux9/ALSA-2026:36639.json"}},{"package":{"name":"nginx-mod-stream","ecosystem":"AlmaLinux:9","purl":"pkg:rpm/almalinux/nginx-mod-stream"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2:1.26.3-9.module_el9.8.0+281+75d5e6d4.2"}]}],"database_specific":{"source":"https://github.com/AlmaLinux/osv-database/blob/master/advisories/almalinux9/ALSA-2026:36639.json"}}],"schema_version":"1.7.5"}