{"id":"CLSA-2026-1790152715","summary":"Fix CVE(s): CVE-2026-42055","details":"   * SECURITY UPDATE: heap buffer overflow via oversized HTTP/2 and gRPC upstream request headers\n     - debian/patches/CVE-2026-42055.patch: reject header fields longer than\n       NGX_HTTP_V2_MAX_FIELD in ngx_http_grpc_create_request() before the upstream\n       request buffer length is computed, and in ngx_http_v2_header_filter() for the\n       Content-Type and Location response header values\n     - CVE-2026-42055","modified":"2026-10-26T09:32:04.179444494Z","published":"2026-09-23T08:38:47Z","upstream":["CVE-2026-42055"],"references":[{"type":"ADVISORY","url":"https://errata.tuxcare.com/els_os/ubuntu18.04els/CLSA-2026-1790152715.html"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-42055"}],"affected":[{"package":{"name":"libnginx-mod-http-auth-pam","ecosystem":"TuxCare:Ubuntu:18.04","purl":"pkg:deb/tuxcare/libnginx-mod-http-auth-pam?distro=ubuntu-18.04"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.14.0-0ubuntu1.11+tuxcare.els8"}]}],"database_specific":{"source":"https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/ubuntu18.04els/CLSA-2026-1790152715.json"}},{"package":{"name":"libnginx-mod-http-cache-purge","ecosystem":"TuxCare:Ubuntu:18.04","purl":"pkg:deb/tuxcare/libnginx-mod-http-cache-purge?distro=ubuntu-18.04"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.14.0-0ubuntu1.11+tuxcare.els8"}]}],"database_specific":{"source":"https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/ubuntu18.04els/CLSA-2026-1790152715.json"}},{"package":{"name":"libnginx-mod-http-dav-ext","ecosystem":"TuxCare:Ubuntu:18.04","purl":"pkg:deb/tuxcare/libnginx-mod-http-dav-ext?distro=ubuntu-18.04"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.14.0-0ubuntu1.11+tuxcare.els8"}]}],"database_specific":{"source":"https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/ubuntu18.04els/CLSA-2026-1790152715.json"}},{"package":{"name":"libnginx-mod-http-echo","ecosystem":"TuxCare:Ubuntu:18.04","purl":"pkg:deb/tuxcare/libnginx-mod-http-echo?distro=ubuntu-18.04"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.14.0-0ubuntu1.11+tuxcare.els8"}]}],"database_specific":{"source":"https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/ubuntu18.04els/CLSA-2026-1790152715.json"}},{"package":{"name":"libnginx-mod-http-fancyindex","ecosystem":"TuxCare:Ubuntu:18.04","purl":"pkg:deb/tuxcare/libnginx-mod-http-fancyindex?distro=ubuntu-18.04"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.14.0-0ubuntu1.11+tuxcare.els8"}]}],"database_specific":{"source":"https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/ubuntu18.04els/CLSA-2026-1790152715.json"}},{"package":{"name":"libnginx-mod-http-geoip","ecosystem":"TuxCare:Ubuntu:18.04","purl":"pkg:deb/tuxcare/libnginx-mod-http-geoip?distro=ubuntu-18.04"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.14.0-0ubuntu1.11+tuxcare.els8"}]}],"database_specific":{"source":"https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/ubuntu18.04els/CLSA-2026-1790152715.json"}},{"package":{"name":"libnginx-mod-http-headers-more-filter","ecosystem":"TuxCare:Ubuntu:18.04","purl":"pkg:deb/tuxcare/libnginx-mod-http-headers-more-filter?distro=ubuntu-18.04"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.14.0-0ubuntu1.11+tuxcare.els8"}]}],"database_specific":{"source":"https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/ubuntu18.04els/CLSA-2026-1790152715.json"}},{"package":{"name":"libnginx-mod-http-image-filter","ecosystem":"TuxCare:Ubuntu:18.04","purl":"pkg:deb/tuxcare/libnginx-mod-http-image-filter?distro=ubuntu-18.04"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.14.0-0ubuntu1.11+tuxcare.els8"}]}],"database_specific":{"source":"https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/ubuntu18.04els/CLSA-2026-1790152715.json"}},{"package":{"name":"libnginx-mod-http-lua","ecosystem":"TuxCare:Ubuntu:18.04","purl":"pkg:deb/tuxcare/libnginx-mod-http-lua?distro=ubuntu-18.04"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.14.0-0ubuntu1.11+tuxcare.els8"}]}],"database_specific":{"source":"https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/ubuntu18.04els/CLSA-2026-1790152715.json"}},{"package":{"name":"libnginx-mod-http-ndk","ecosystem":"TuxCare:Ubuntu:18.04","purl":"pkg:deb/tuxcare/libnginx-mod-http-ndk?distro=ubuntu-18.04"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.14.0-0ubuntu1.11+tuxcare.els8"}]}],"database_specific":{"source":"https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/ubuntu18.04els/CLSA-2026-1790152715.json"}},{"package":{"name":"libnginx-mod-http-perl","ecosystem":"TuxCare:Ubuntu:18.04","purl":"pkg:deb/tuxcare/libnginx-mod-http-perl?distro=ubuntu-18.04"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.14.0-0ubuntu1.11+tuxcare.els8"}]}],"database_specific":{"source":"https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/ubuntu18.04els/CLSA-2026-1790152715.json"}},{"package":{"name":"libnginx-mod-http-subs-filter","ecosystem":"TuxCare:Ubuntu:18.04","purl":"pkg:deb/tuxcare/libnginx-mod-http-subs-filter?distro=ubuntu-18.04"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.14.0-0ubuntu1.11+tuxcare.els8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