{"schema_version":"1.7.2","id":"OESA-2026-2511","modified":"2026-08-06T11:11:27Z","published":"2026-05-29T11:11:27Z","upstream":["CVE-2026-40701","CVE-2026-42934","CVE-2026-42946"],"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 Open Source have a vulnerability in the ngx_http_ssl_module module when the ssl_verify_client directive is set to "on" or "optional," and the ssl_ocsp directive is set to "on" or the leaf parameters are configured with a resolver. With this configuration, an unauthenticated attacker can send requests along with conditions beyond its control that may cause a heap-use-after-free error in the NGINX worker process. This vulnerability may result in limited modification of data or the NGINX worker process restarting. Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.(CVE-2026-40701)\n\nNGINX Open Source have a vulnerability in the ngx_http_charset_module module. When charset, source_charset, and charset_map and proxy_pass with disabled buffering ("off") directives are configured, unauthenticated attackers can send requests that with conditions beyond the attackers' control to cause a heap buffer over-read in the NGINX worker process, leading to limited disclosure of memory or a restart. Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.(CVE-2026-42934)\n\nA vulnerability exists in the ngx_http_scgi_module and ngx_http_uwsgi_module modules that may result in excessive memory allocation or an over-read of data. When scgi_pass or uwsgi_pass is configured, an unauthenticated attacker with man-in-the-middle (MITM) ability to control responses from an upstream server may be able to read the memory of the NGINX worker process or restart it.  Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.(CVE-2026-42946)","affected":[{"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":"1.24.0-10.oe2403sp3"}]}],"ecosystem_specific":{"aarch64":["nginx-1.24.0-10.oe2403sp3.aarch64.rpm","nginx-debuginfo-1.24.0-10.oe2403sp3.aarch64.rpm","nginx-debugsource-1.24.0-10.oe2403sp3.aarch64.rpm","nginx-mod-devel-1.24.0-10.oe2403sp3.aarch64.rpm","nginx-mod-http-image-filter-1.24.0-10.oe2403sp3.aarch64.rpm","nginx-mod-http-perl-1.24.0-10.oe2403sp3.aarch64.rpm","nginx-mod-http-xslt-filter-1.24.0-10.oe2403sp3.aarch64.rpm","nginx-mod-mail-1.24.0-10.oe2403sp3.aarch64.rpm","nginx-mod-stream-1.24.0-10.oe2403sp3.aarch64.rpm"],"noarch":["nginx-all-modules-1.24.0-10.oe2403sp3.noarch.rpm","nginx-filesystem-1.24.0-10.oe2403sp3.noarch.rpm","nginx-help-1.24.0-10.oe2403sp3.noarch.rpm"],"src":["nginx-1.24.0-10.oe2403sp3.src.rpm"],"x86_64":["nginx-1.24.0-10.oe2403sp3.x86_64.rpm","nginx-debuginfo-1.24.0-10.oe2403sp3.x86_64.rpm","nginx-debugsource-1.24.0-10.oe2403sp3.x86_64.rpm","nginx-mod-devel-1.24.0-10.oe2403sp3.x86_64.rpm","nginx-mod-http-image-filter-1.24.0-10.oe2403sp3.x86_64.rpm","nginx-mod-http-perl-1.24.0-10.oe2403sp3.x86_64.rpm","nginx-mod-http-xslt-filter-1.24.0-10.oe2403sp3.x86_64.rpm","nginx-mod-mail-1.24.0-10.oe2403sp3.x86_64.rpm","nginx-mod-stream-1.24.0-10.oe2403sp3.x86_64.rpm"]}}],"references":[{"type":"ADVISORY","url":"https://www.openeuler.org/zh/security/security-bulletins/detail/?id=openEuler-SA-2026-2511"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-40701"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-42934"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-42946"}],"severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:L"}],"database_specific":{"severity":"Medium"}}