{"id":"CLSA-2026-1783696553","summary":"nginx: Fix of CVE-2026-42055","details":"- fix CVE-2026-42055: HPACK field-length validation in HTTP/2 gRPC request\n  builder and HTTP/2 response header filter; fields exceeding\n  NGX_HTTP_V2_MAX_FIELD now return NGX_ERROR instead of overflowing the\n  4-byte HPACK length prefix","modified":"2026-10-26T09:30:25.008204995Z","published":"2026-07-10T15:16:09Z","upstream":["CVE-2026-42055"],"references":[{"type":"ADVISORY","url":"https://errata.tuxcare.com/els_os/almalinux9.2esu/CLSA-2026-1783696553.html"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-42055"}],"affected":[{"package":{"name":"nginx","ecosystem":"TuxCare:AlmaLinux:9.2","purl":"pkg:rpm/tuxcare/nginx?distro=almalinux-9.2"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1:1.20.1-14.el9_2.1.alma.1.tuxcare.els10"}]}],"database_specific":{"source":"https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/almalinux9.2esu/CLSA-2026-1783696553.json"}},{"package":{"name":"nginx-all-modules","ecosystem":"TuxCare:AlmaLinux:9.2","purl":"pkg:rpm/tuxcare/nginx-all-modules?distro=almalinux-9.2"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1:1.20.1-14.el9_2.1.alma.1.tuxcare.els10"}]}],"database_specific":{"source":"https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/almalinux9.2esu/CLSA-2026-1783696553.json"}},{"package":{"name":"nginx-core","ecosystem":"TuxCare:AlmaLinux:9.2","purl":"pkg:rpm/tuxcare/nginx-core?distro=almalinux-9.2"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1:1.20.1-14.el9_2.1.alma.1.tuxcare.els10"}]}],"database_specific":{"source":"https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/almalinux9.2esu/CLSA-2026-1783696553.json"}},{"package":{"name":"nginx-filesystem","ecosystem":"TuxCare:AlmaLinux:9.2","purl":"pkg:rpm/tuxcare/nginx-filesystem?distro=almalinux-9.2"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1:1.20.1-14.el9_2.1.alma.1.tuxcare.els10"}]}],"database_specific":{"source":"https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/almalinux9.2esu/CLSA-2026-1783696553.json"}},{"package":{"name":"nginx-mod-devel","ecosystem":"TuxCare:AlmaLinux:9.2","purl":"pkg:rpm/tuxcare/nginx-mod-devel?distro=almalinux-9.2"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1:1.20.1-14.el9_2.1.alma.1.tuxcare.els10"}]}],"database_specific":{"source":"https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/almalinux9.2esu/CLSA-2026-1783696553.json"}},{"package":{"name":"nginx-mod-http-image-filter","ecosystem":"TuxCare:AlmaLinux:9.2","purl":"pkg:rpm/tuxcare/nginx-mod-http-image-filter?distro=almalinux-9.2"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1:1.20.1-14.el9_2.1.alma.1.tuxcare.els10"}]}],"database_specific":{"source":"https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/almalinux9.2esu/CLSA-2026-1783696553.json"}},{"package":{"name":"nginx-mod-http-perl","ecosystem":"TuxCare:AlmaLinux:9.2","purl":"pkg:rpm/tuxcare/nginx-mod-http-perl?distro=almalinux-9.2"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1:1.20.1-14.el9_2.1.alma.1.tuxcare.els10"}]}],"database_specific":{"source":"https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/almalinux9.2esu/CLSA-2026-1783696553.json"}},{"package":{"name":"nginx-mod-http-xslt-filter","ecosystem":"TuxCare:AlmaLinux:9.2","purl":"pkg:rpm/tuxcare/nginx-mod-http-xslt-filter?distro=almalinux-9.2"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1:1.20.1-14.el9_2.1.alma.1.tuxcare.els10"}]}],"database_specific":{"source":"https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/almalinux9.2esu/CLSA-2026-1783696553.json"}},{"package":{"name":"nginx-mod-mail","ecosystem":"TuxCare:AlmaLinux:9.2","purl":"pkg:rpm/tuxcare/nginx-mod-mail?distro=almalinux-9.2"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1:1.20.1-14.el9_2.1.alma.1.tuxcare.els10"}]}],"database_specific":{"source":"https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/almalinux9.2esu/CLSA-2026-1783696553.json"}},{"package":{"name":"nginx-mod-stream","ecosystem":"TuxCare:AlmaLinux:9.2","purl":"pkg:rpm/tuxcare/nginx-mod-stream?distro=almalinux-9.2"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1:1.20.1-14.el9_2.1.alma.1.tuxcare.els10"}]}],"database_specific":{"source":"https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/almalinux9.2esu/CLSA-2026-1783696553.json"}}],"schema_version":"1.9.0"}