{"schema_version":"1.7.2","id":"OESA-2026-3216","modified":"2026-08-06T11:12:05Z","published":"2026-08-01T11:12:05Z","upstream":["CVE-2026-42533","CVE-2026-56434","CVE-2026-60005"],"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\nA vulnerability exists in NGINX Plus and NGINX Open Source when a map directive uses regex matching and a string expression references the map's regex capture variables before referencing the map output variable. Alternatively, the same result could be achieved by using a non-cacheable variable in a string expression under certain conditions. 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\nImpact:\nThis vulnerability may allow remote attackers to cause a denial-of-service (DoS) on the NGINX system or to possibly trigger a code execution. There is no control plane exposure; this is a data plane issue only.\n\n\n\n\n Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.(CVE-2026-42533)\n\nNGINX Plus and NGINX Open Source have a vulnerability in the ngx_http_ssi_module module. This vulnerability may exist when the Server-Side Includes (SSI), proxy_pass, and proxy_buffering off directives are configured. With this configuration, an unauthenticated attacker with man-in-the-middle (MITM) ability to control responses from an upstream server may be able to cause a use-after-free in the NGINX worker process. This issue may lead to limited modification of memory or a restart of the NGINX worker process.\n\nImpact:\nThis vulnerability may allow remote attackers to have limited control to modify memory contents or restart the NGINX worker process. There is no control plane exposure; this is a data plane issue only.\n\nNote: Software versions which have reached End of Technical Support (EoTS) are not evaluated.(CVE-2026-56434)\n\nNGINX Plus and NGINX Open Source have a vulnerability in the ngx_http_slice_module module. When the slice directive and unnamed regex captures are configured or when a background cache update happens, unauthenticated attackers can send requests that may cause uninitialized memory access in the NGINX worker process, leading to limited disclosure of memory or a restart.\n\nImpact:\nThis vulnerability may allow remote, unauthenticated attackers to have limited control to disclose memory contents or restart the NGINX worker process. There is no control plane exposure; this is a data plane issue only.\nNote: The ngx_http_slice_module module is not enabled by default; it's enabled with the --with-http_slice_module configuration parameter.\n\nNote: Software versions which have reached End of Technical Support (EoTS) are not evaluated.(CVE-2026-60005)","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":"1.21.5-19.oe2203sp4"}]}],"ecosystem_specific":{"aarch64":["nginx-1.21.5-19.oe2203sp4.aarch64.rpm","nginx-debuginfo-1.21.5-19.oe2203sp4.aarch64.rpm","nginx-debugsource-1.21.5-19.oe2203sp4.aarch64.rpm","nginx-mod-devel-1.21.5-19.oe2203sp4.aarch64.rpm","nginx-mod-http-image-filter-1.21.5-19.oe2203sp4.aarch64.rpm","nginx-mod-http-perl-1.21.5-19.oe2203sp4.aarch64.rpm","nginx-mod-http-xslt-filter-1.21.5-19.oe2203sp4.aarch64.rpm","nginx-mod-mail-1.21.5-19.oe2203sp4.aarch64.rpm","nginx-mod-stream-1.21.5-19.oe2203sp4.aarch64.rpm"],"noarch":["nginx-all-modules-1.21.5-19.oe2203sp4.noarch.rpm","nginx-filesystem-1.21.5-19.oe2203sp4.noarch.rpm","nginx-help-1.21.5-19.oe2203sp4.noarch.rpm"],"src":["nginx-1.21.5-19.oe2203sp4.src.rpm"],"x86_64":["nginx-1.21.5-19.oe2203sp4.x86_64.rpm","nginx-debuginfo-1.21.5-19.oe2203sp4.x86_64.rpm","nginx-debugsource-1.21.5-19.oe2203sp4.x86_64.rpm","nginx-mod-devel-1.21.5-19.oe2203sp4.x86_64.rpm","nginx-mod-http-image-filter-1.21.5-19.oe2203sp4.x86_64.rpm","nginx-mod-http-perl-1.21.5-19.oe2203sp4.x86_64.rpm","nginx-mod-http-xslt-filter-1.21.5-19.oe2203sp4.x86_64.rpm","nginx-mod-mail-1.21.5-19.oe2203sp4.x86_64.rpm","nginx-mod-stream-1.21.5-19.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":"1.24.0-14.oe2403sp1"}]}],"ecosystem_specific":{"aarch64":["compat-nginx-1.24.0-14.oe2403sp1.aarch64.rpm","compat-nginx-debuginfo-1.24.0-14.oe2403sp1.aarch64.rpm","compat-nginx-debugsource-1.24.0-14.oe2403sp1.aarch64.rpm","compat-nginx-mod-http-image-filter-1.24.0-14.oe2403sp1.aarch64.rpm","compat-nginx-mod-http-perl-1.24.0-14.oe2403sp1.aarch64.rpm","compat-nginx-mod-http-xslt-filter-1.24.0-14.oe2403sp1.aarch64.rpm","compat-nginx-mod-mail-1.24.0-14.oe2403sp1.aarch64.rpm","compat-nginx-mod-stream-1.24.0-14.oe2403sp1.aarch64.rpm","nginx-1.24.0-14.oe2403sp1.aarch64.rpm","nginx-mod-devel-1.24.0-14.oe2403sp1.aarch64.rpm","nginx-mod-http-image-filter-1.24.0-14.oe2403sp1.aarch64.rpm","nginx-debuginfo-1.24.0-14.oe2403sp1.aarch64.rpm","nginx-mod-http-perl-1.24.0-14.oe2403sp1.aarch64.rpm","nginx-debugsource-1.24.0-14.oe2403sp1.aarch64.rpm","nginx-mod-http-xslt-filter-1.24.0-14.oe2403sp1.aarch64.rpm","nginx-mod-mail-1.24.0-14.oe2403sp1.aarch64.rpm","nginx-mod-stream-1.24.0-14.oe2403sp1.aarch64.rpm"],"noarch":["compat-nginx-all-modules-1.24.0-14.oe2403sp1.noarch.rpm","compat-nginx-filesystem-1.24.0-14.oe2403sp1.noarch.rpm","compat-nginx-help-1.24.0-14.oe2403sp1.noarch.rpm","nginx-filesystem-1.24.0-14.oe2403sp1.noarch.rpm","nginx-help-1.24.0-14.oe2403sp1.noarch.rpm","nginx-all-modules-1.24.0-14.oe2403sp1.noarch.rpm"],"src":["compat-nginx-1.24.0-14.oe2403sp1.src.rpm","nginx-1.24.0-14.oe2403sp1.src.rpm"],"x86_64":["compat-nginx-1.24.0-14.oe2403sp1.x86_64.rpm","compat-nginx-debuginfo-1.24.0-14.oe2403sp1.x86_64.rpm","compat-nginx-debugsource-1.24.0-14.oe2403sp1.x86_64.rpm","compat-nginx-mod-http-image-filter-1.24.0-14.oe2403sp1.x86_64.rpm","compat-nginx-mod-http-perl-1.24.0-14.oe2403sp1.x86_64.rpm","compat-nginx-mod-http-xslt-filter-1.24.0-14.oe2403sp1.x86_64.rpm","compat-nginx-mod-mail-1.24.0-14.oe2403sp1.x86_64.rpm","compat-nginx-mod-stream-1.24.0-14.oe2403sp1.x86_64.rpm","nginx-1.24.0-14.oe2403sp1.x86_64.rpm","nginx-mod-devel-1.24.0-14.oe2403sp1.x86_64.rpm","nginx-mod-http-image-filter-1.24.0-14.oe2403sp1.x86_64.rpm","nginx-debuginfo-1.24.0-14.oe2403sp1.x86_64.rpm","nginx-mod-http-perl-1.24.0-14.oe2403sp1.x86_64.rpm","nginx-debugsource-1.24.0-14.oe2403sp1.x86_64.rpm","nginx-mod-http-xslt-filter-1.24.0-14.oe2403sp1.x86_64.rpm","nginx-mod-mail-1.24.0-14.oe2403sp1.x86_64.rpm","nginx-mod-stream-1.24.0-14.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":"1.24.0-14.oe2403sp3"}]}],"ecosystem_specific":{"aarch64":["nginx-1.24.0-14.oe2403sp3.aarch64.rpm","nginx-debuginfo-1.24.0-14.oe2403sp3.aarch64.rpm","nginx-debugsource-1.24.0-14.oe2403sp3.aarch64.rpm","nginx-mod-devel-1.24.0-14.oe2403sp3.aarch64.rpm","nginx-mod-http-image-filter-1.24.0-14.oe2403sp3.aarch64.rpm","nginx-mod-http-perl-1.24.0-14.oe2403sp3.aarch64.rpm","nginx-mod-http-xslt-filter-1.24.0-14.oe2403sp3.aarch64.rpm","nginx-mod-mail-1.24.0-14.oe2403sp3.aarch64.rpm","nginx-mod-stream-1.24.0-14.oe2403sp3.aarch64.rpm"],"noarch":["nginx-all-modules-1.24.0-14.oe2403sp3.noarch.rpm","nginx-filesystem-1.24.0-14.oe2403sp3.noarch.rpm","nginx-help-1.24.0-14.oe2403sp3.noarch.rpm"],"src":["nginx-1.24.0-14.oe2403sp3.src.rpm"],"x86_64":["nginx-1.24.0-14.oe2403sp3.x86_64.rpm","nginx-debuginfo-1.24.0-14.oe2403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