{"id":"CLSA-2026-1791276939","summary":"Fix CVE(s): CVE-2026-42533","details":"   * SECURITY UPDATE: heap buffer overflow in the script engine when a map\n     regex capture or a non-cacheable variable changes length between the\n     length and copy passes of a string expression\n     - debian/patches/CVE-2026-42533.patch: add buffer end checks to the\n       http and stream script copy codes, the access logs and the direct\n       script users in the proxy, fastcgi, scgi, uwsgi, grpc, index and\n       try_files modules, and cut the result to its actual length\n     - debian/modules/patches/http-ndk/CVE-2026-42533-ndk.patch: emit the\n       new complex value end code in the bundled NDK, which keeps its own\n       copy of the rewrite value compiler\n     - debian/modules/patches/nchan/CVE-2026-42533-nchan.patch: bounds\n       check the script copy codes run by the bundled nchan module\n     - CVE-2026-42533\n   * IMPORTANT: the layout of the script engine structures changed (an end\n     pointer was added to ngx_http_script_engine_t and\n     ngx_stream_script_engine_t, and a status field to the stream one), and\n     complex values compiled for the rewrite engine now need the new\n     ngx_http_script_complex_value_end_code. Third-party dynamic modules\n     that drive the nginx script engine directly must be rebuilt against\n     this version and updated, otherwise they cause memory corruption and\n     worker crashes. This affects NDK based modules such as set-misc,\n     array-var, encrypted-session, form-input and the set_by_lua directive\n     of the lua module. The bundled NDK has been adapted.","modified":"2026-10-26T09:31:53.124454626Z","published":"2026-10-06T08:55:50Z","upstream":["CVE-2026-42533"],"references":[{"type":"ADVISORY","url":"https://errata.tuxcare.com/els_os/debian10els/CLSA-2026-1791276939.html"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-42533"}],"affected":[{"package":{"name":"libnginx-mod-http-auth-pam","ecosystem":"TuxCare:Debian:10","purl":"pkg:deb/tuxcare/libnginx-mod-http-auth-pam?distro=debian-10"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.14.2-2+deb10u5+tuxcare.els8"}]}],"database_specific":{"source":"https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/debian10els/CLSA-2026-1791276939.json"}},{"package":{"name":"libnginx-mod-http-cache-purge","ecosystem":"TuxCare:Debian:10","purl":"pkg:deb/tuxcare/libnginx-mod-http-cache-purge?distro=debian-10"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.14.2-2+deb10u5+tuxcare.els8"}]}],"database_specific":{"source":"https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/debian10els/CLSA-2026-1791276939.json"}},{"package":{"name":"libnginx-mod-http-dav-ext","ecosystem":"TuxCare:Debian:10","purl":"pkg:deb/tuxcare/libnginx-mod-http-dav-ext?distro=debian-10"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.14.2-2+deb10u5+tuxcare.els8"}]}],"database_specific":{"source":"https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/debian10els/CLSA-2026-1791276939.json"}},{"package":{"name":"libnginx-mod-http-echo","ecosystem":"TuxCare:Debian:10","purl":"pkg:deb/tuxcare/libnginx-mod-http-echo?distro=debian-10"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.14.2-2+deb10u5+tuxcare.els8"}]}],"database_specific":{"source":"https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/debian10els/CLSA-2026-1791276939.json"}},{"package":{"name":"libnginx-mod-http-fancyindex","ecosystem":"TuxCare:Debian:10","purl":"pkg:deb/tuxcare/libnginx-mod-http-fancyindex?distro=debian-10"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.14.2-2+deb10u5+tuxcare.els8"}]}],"database_specific":{"source":"https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/debian10els/CLSA-2026-1791276939.json"}},{"package":{"name":"libnginx-mod-http-geoip","ecosystem":"TuxCare:Debian:10","purl":"pkg:deb/tuxcare/libnginx-mod-http-geoip?distro=debian-10"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.14.2-2+deb10u5+tuxcare.els8"}]}],"database_specific":{"source":"https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/debian10els/CLSA-2026-1791276939.json"}},{"package":{"name":"libnginx-mod-http-headers-more-filter","ecosystem":"TuxCare:Debian:10","purl":"pkg:deb/tuxcare/libnginx-mod-http-headers-more-filter?distro=debian-10"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.14.2-2+deb10u5+tuxcare.els8"}]}],"database_specific":{"source":"https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/debian10els/CLSA-2026-1791276939.json"}},{"package":{"name":"libnginx-mod-http-image-filter","ecosystem":"TuxCare:Debian:10","purl":"pkg:deb/tuxcare/libnginx-mod-http-image-filter?distro=debian-10"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.14.2-2+deb10u5+tuxcare.els8"}]}],"database_specific":{"source":"https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/debian10els/CLSA-2026-1791276939.json"}},{"package":{"name":"libnginx-mod-http-lua","ecosystem":"TuxCare:Debian:10","purl":"pkg:deb/tuxcare/libnginx-mod-http-lua?distro=debian-10"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.14.2-2+deb10u5+tuxcare.els8"}]}],"database_specific":{"source":"https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/debian10els/CLSA-2026-1791276939.json"}},{"package":{"name":"libnginx-mod-http-ndk","ecosystem":"TuxCare:Debian:10","purl":"pkg:deb/tuxcare/libnginx-mod-http-ndk?distro=debian-10"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.14.2-2+deb10u5+tuxcare.els8"}]}],"database_specific":{"source":"https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/debian10els/CLSA-2026-1791276939.json"}},{"package":{"name":"libnginx-mod-http-perl","ecosystem":"TuxCare:Debian:10","purl":"pkg:deb/tuxcare/libnginx-mod-http-perl?distro=debian-10"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.14.2-2+deb10u5+tuxcare.els8"}]}],"database_specific":{"source":"https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/debian10els/CLSA-2026-1791276939.json"}},{"package":{"name":"libnginx-mod-http-subs-filter","ecosystem":"TuxCare:Debian:10","purl":"pkg:deb/tuxcare/libnginx-mod-http-subs-filter?distro=debian-10"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.14.2-2+deb10u5+tuxcare.els8"}]}],"database_specific":{"source":"https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/debian10els/CLSA-2026-1791276939.json"}},{"package":{"name":"libnginx-mod-http-uploadprogress","ecosystem":"TuxCare:Debian:10","purl":"pkg:deb/tuxcare/libnginx-mod-http-uploadprogress?distro=debian-10"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.14.2-2+deb10u5+tuxcare.els8"}]}],"database_specific":{"source":"https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/debian10els/CLSA-2026-1791276939.json"}},{"package":{"name":"libnginx-mod-http-upstream-fair","ecosystem":"TuxCare:Debian:10","purl":"pkg:deb/tuxcare/libnginx-mod-http-upstream-fair?distro=debian-10"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.14.2-2+deb10u5+tuxcare.els8"}]}],"database_specific":{"source":"https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/debian10els/CLSA-2026-1791276939.json"}},{"package":{"name":"libnginx-mod-http-xslt-filter","ecosystem":"TuxCare:Debian:10","purl":"pkg:deb/tuxcare/libnginx-mod-http-xslt-filter?distro=debian-10"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.14.2-2+deb10u5+tuxcare.els8"}]}],"database_specific":{"source":"https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/debian10els/CLSA-2026-1791276939.json"}},{"package":{"name":"libnginx-mod-mail","ecosystem":"TuxCare:Debian:10","purl":"pkg:deb/tuxcare/libnginx-mod-mail?distro=debian-10"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.14.2-2+deb10u5+tuxcare.els8"}]}],"database_specific":{"source":"https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/debian10els/CLSA-2026-1791276939.json"}},{"package":{"name":"libnginx-mod-nchan","ecosystem":"TuxCare:Debian:10","purl":"pkg:deb/tuxcare/libnginx-mod-nchan?distro=debian-10"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.14.2-2+deb10u5+tuxcare.els8"}]}],"database_specific":{"source":"https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/debian10els/CLSA-2026-1791276939.json"}},{"package":{"name":"libnginx-mod-rtmp","ecosystem":"TuxCare:Debian:10","purl":"pkg:deb/tuxcare/libnginx-mod-rtmp?distro=debian-10"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.14.2-2+deb10u5+tuxcare.els8"}]}],"database_specific":{"source":"https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/debian10els/CLSA-2026-1791276939.json"}},{"package":{"name":"libnginx-mod-stream","ecosystem":"TuxCare:Debian:10","purl":"pkg:deb/tuxcare/libnginx-mod-stream?distro=debian-10"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.14.2-2+deb10u5+tuxcare.els8"}]}],"database_specific":{"source":"https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/debian10els/CLSA-2026-1791276939.json"}},{"package":{"name":"nginx","ecosystem":"TuxCare:Debian:10","purl":"pkg:deb/tuxcare/nginx?distro=debian-10"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.14.2-2+deb10u5+tuxcare.els8"}]}],"database_specific":{"source":"https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/debian10els/CLSA-2026-1791276939.json"}},{"package":{"name":"nginx-common","ecosystem":"TuxCare:Debian:10","purl":"pkg:deb/tuxcare/nginx-common?distro=debian-10"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.14.2-2+deb10u5+tuxcare.els8"}]}],"database_specific":{"source":"https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/debian10els/CLSA-2026-1791276939.json"}},{"package":{"name":"nginx-doc","ecosystem":"TuxCare:Debian:10","purl":"pkg:deb/tuxcare/nginx-doc?distro=debian-10"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.14.2-2+deb10u5+tuxcare.els8"}]}],"database_specific":{"source":"https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/debian10els/CLSA-2026-1791276939.json"}},{"package":{"name":"nginx-extras","ecosystem":"TuxCare:Debian:10","purl":"pkg:deb/tuxcare/nginx-extras?distro=debian-10"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.14.2-2+deb10u5+tuxcare.els8"}]}],"database_specific":{"source":"https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/debian10els/CLSA-2026-1791276939.json"}},{"package":{"name":"nginx-full","ecosystem":"TuxCare:Debian:10","purl":"pkg:deb/tuxcare/nginx-full?distro=debian-10"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.14.2-2+deb10u5+tuxcare.els8"}]}],"database_specific":{"source":"https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/debian10els/CLSA-2026-1791276939.json"}},{"package":{"name":"nginx-light","ecosystem":"TuxCare:Debian:10","purl":"pkg:deb/tuxcare/nginx-light?distro=debian-10"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.14.2-2+deb10u5+tuxcare.els8"}]}],"database_specific":{"source":"https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/debian10els/CLSA-2026-1791276939.json"}}],"schema_version":"1.9.0"}