{"schema_version":"1.7.2","id":"OESA-2026-2587","modified":"2026-08-06T11:11:31Z","published":"2026-06-05T11:11:31Z","upstream":["CVE-2026-9256"],"summary":"nginx security update","details":"NGINX is a free, open-source, high-performance HTTP server and reverse proxy,  as well as an IMAP/POP3 proxy server.\r\n\r\nSecurity Fix(es):\n\nNGINX Plus and NGINX Open Source have a vulnerability in the ngx_http_rewrite_module module. This vulnerability exists when a rewrite directive uses a regex pattern with distinct, overlapping Perl-Compatible Regular Expression (PCRE) captures (for example, ^/((.*))$) and a replacement string that references multiple such captures (for example, $1$2) in a redirect or arguments context. An unauthenticated attacker along with conditions beyond their control can exploit this vulnerability by sending crafted HTTP requests. This may cause a heap buffer overflow in the NGINX worker process leading to a restart. Additionally, attackers can execute code on systems with Address Space Layout Randomization (ASLR) disabled or when the attacker can bypass ASLR. \n\n\nNote: Software versions which have reached End of Technical Support (EoTS) are not evaluated.(CVE-2026-9256)","affected":[{"package":{"ecosystem":"openEuler:22.03-LTS-SP4","name":"nginx","purl":"pkg:rpm/openEuler/nginx&distro=openEuler-22.03-LTS-SP4"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.21.5-15.oe2203sp4"}]}],"ecosystem_specific":{"aarch64":["nginx-1.21.5-15.oe2203sp4.aarch64.rpm","nginx-debuginfo-1.21.5-15.oe2203sp4.aarch64.rpm","nginx-debugsource-1.21.5-15.oe2203sp4.aarch64.rpm","nginx-mod-devel-1.21.5-15.oe2203sp4.aarch64.rpm","nginx-mod-http-image-filter-1.21.5-15.oe2203sp4.aarch64.rpm","nginx-mod-http-perl-1.21.5-15.oe2203sp4.aarch64.rpm","nginx-mod-http-xslt-filter-1.21.5-15.oe2203sp4.aarch64.rpm","nginx-mod-mail-1.21.5-15.oe2203sp4.aarch64.rpm","nginx-mod-stream-1.21.5-15.oe2203sp4.aarch64.rpm"],"noarch":["nginx-all-modules-1.21.5-15.oe2203sp4.noarch.rpm","nginx-filesystem-1.21.5-15.oe2203sp4.noarch.rpm","nginx-help-1.21.5-15.oe2203sp4.noarch.rpm"],"src":["nginx-1.21.5-15.oe2203sp4.src.rpm"],"x86_64":["nginx-1.21.5-15.oe2203sp4.x86_64.rpm","nginx-debuginfo-1.21.5-15.oe2203sp4.x86_64.rpm","nginx-debugsource-1.21.5-15.oe2203sp4.x86_64.rpm","nginx-mod-devel-1.21.5-15.oe2203sp4.x86_64.rpm","nginx-mod-http-image-filter-1.21.5-15.oe2203sp4.x86_64.rpm","nginx-mod-http-perl-1.21.5-15.oe2203sp4.x86_64.rpm","nginx-mod-http-xslt-filter-1.21.5-15.oe2203sp4.x86_64.rpm","nginx-mod-mail-1.21.5-15.oe2203sp4.x86_64.rpm","nginx-mod-stream-1.21.5-15.oe2203sp4.x86_64.rpm"]}},{"package":{"ecosystem":"openEuler:24.03-LTS-SP1","name":"nginx","purl":"pkg:rpm/openEuler/nginx&distro=openEuler-24.03-LTS-SP1"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"compat-1.24.0-11.oe2403sp1"}]}],"ecosystem_specific":{"aarch64":["nginx-1.24.0-11.oe2403sp1.aarch64.rpm","nginx-debuginfo-1.24.0-11.oe2403sp1.aarch64.rpm","nginx-debugsource-1.24.0-11.oe2403sp1.aarch64.rpm","nginx-mod-devel-1.24.0-11.oe2403sp1.aarch64.rpm","nginx-mod-http-image-filter-1.24.0-11.oe2403sp1.aarch64.rpm","nginx-mod-http-perl-1.24.0-11.oe2403sp1.aarch64.rpm","nginx-mod-http-xslt-filter-1.24.0-11.oe2403sp1.aarch64.rpm","nginx-mod-mail-1.24.0-11.oe2403sp1.aarch64.rpm","nginx-mod-stream-1.24.0-11.oe2403sp1.aarch64.rpm","compat-nginx-1.24.0-11.oe2403sp1.aarch64.rpm","compat-nginx-debuginfo-1.24.0-11.oe2403sp1.aarch64.rpm","compat-nginx-debugsource-1.24.0-11.oe2403sp1.aarch64.rpm","compat-nginx-mod-http-image-filter-1.24.0-11.oe2403sp1.aarch64.rpm","compat-nginx-mod-http-perl-1.24.0-11.oe2403sp1.aarch64.rpm","compat-nginx-mod-http-xslt-filter-1.24.0-11.oe2403sp1.aarch64.rpm","compat-nginx-mod-mail-1.24.0-11.oe2403sp1.aarch64.rpm","compat-nginx-mod-stream-1.24.0-11.oe2403sp1.aarch64.rpm"],"noarch":["nginx-all-modules-1.24.0-11.oe2403sp1.noarch.rpm","nginx-filesystem-1.24.0-11.oe2403sp1.noarch.rpm","nginx-help-1.24.0-11.oe2403sp1.noarch.rpm","compat-nginx-all-modules-1.24.0-11.oe2403sp1.noarch.rpm","compat-nginx-filesystem-1.24.0-11.oe2403sp1.noarch.rpm","compat-nginx-help-1.24.0-11.oe2403sp1.noarch.rpm"],"src":["nginx-1.24.0-11.oe2403sp1.src.rpm","compat-nginx-1.24.0-11.oe2403sp1.src.rpm"],"x86_64":["nginx-1.24.0-11.oe2403sp1.x86_64.rpm","nginx-debuginfo-1.24.0-11.oe2403sp1.x86_64.rpm","nginx-debugsource-1.24.0-11.oe2403sp1.x86_64.rpm","nginx-mod-devel-1.24.0-11.oe2403sp1.x86_64.rpm","nginx-mod-http-image-filter-1.24.0-11.oe2403sp1.x86_64.rpm","nginx-mod-http-perl-1.24.0-11.oe2403sp1.x86_64.rpm","nginx-mod-http-xslt-filter-1.24.0-11.oe2403sp1.x86_64.rpm","nginx-mod-mail-1.24.0-11.oe2403sp1.x86_64.rpm","nginx-mod-stream-1.24.0-11.oe2403sp1.x86_64.rpm","compat-nginx-1.24.0-11.oe2403sp1.x86_64.rpm","compat-nginx-debuginfo-1.24.0-11.oe2403sp1.x86_64.rpm","compat-nginx-debugsource-1.24.0-11.oe2403sp1.x86_64.rpm","compat-nginx-mod-http-image-filter-1.24.0-11.oe2403sp1.x86_64.rpm","compat-nginx-mod-http-perl-1.24.0-11.oe2403sp1.x86_64.rpm","compat-nginx-mod-http-xslt-filter-1.24.0-11.oe2403sp1.x86_64.rpm","compat-nginx-mod-mail-1.24.0-11.oe2403sp1.x86_64.rpm","compat-nginx-mod-stream-1.24.0-11.oe2403sp1.x86_64.rpm"]}},{"package":{"ecosystem":"openEuler:24.03-LTS-SP3","name":"nginx","purl":"pkg:rpm/openEuler/nginx&distro=openEuler-24.03-LTS-SP3"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.24.0-11.oe2403sp3"}]}],"ecosystem_specific":{"aarch64":["nginx-1.24.0-11.oe2403sp3.aarch64.rpm","nginx-debuginfo-1.24.0-11.oe2403sp3.aarch64.rpm","nginx-debugsource-1.24.0-11.oe2403sp3.aarch64.rpm","nginx-mod-devel-1.24.0-11.oe2403sp3.aarch64.rpm","nginx-mod-http-image-filter-1.24.0-11.oe2403sp3.aarch64.rpm","nginx-mod-http-perl-1.24.0-11.oe2403sp3.aarch64.rpm","nginx-mod-http-xslt-filter-1.24.0-11.oe2403sp3.aarch64.rpm","nginx-mod-mail-1.24.0-11.oe2403sp3.aarch64.rpm","nginx-mod-stream-1.24.0-11.oe2403sp3.aarch64.rpm"],"noarch":["nginx-all-modules-1.24.0-11.oe2403sp3.noarch.rpm","nginx-filesystem-1.24.0-11.oe2403sp3.noarch.rpm","nginx-help-1.24.0-11.oe2403sp3.noarch.rpm"],"src":["nginx-1.24.0-11.oe2403sp3.src.rpm"],"x86_64":["nginx-1.24.0-11.oe2403sp3.x86_64.rpm","nginx-debuginfo-1.24.0-11.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