NGINX Plus and NGINX Open Source have a vulnerability in the ngx_http_proxy_v2_module and ngx_http_grpc_module modules. This vulnerability exists when the proxy_http_version to 2 or grpc_pass directives are used to proxy HTTP/2 traffic, the ignore_invalid_headers directive is set to off, and the large_client_header_buffers directive size is larger than 2 megabytes. A remote, unauthenticated attacker, along with conditions beyond their control, could send large headers while creating an upstream request. This may cause a heap-based 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.
Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Alma_linux | — | Upgrade nginx-filesystemUpgrade nginx-mod-mailUpgrade nginx-coreUpgrade nginx-all-modulesUpgrade nginxUpgrade nginx-mod-http-image-filterUpgrade nginx-mod-http-xslt-filterUpgrade nginx-mod-http-perlUpgrade nginx-mod-streamUpgrade nginx-mod-devel | Jul 8, 2026 | Jul 7, 2026 |
| Alpine Linux | — | Upgrade nginx | Jun 23, 2026 | Jun 17, 2026 |
| Amazon Linux Ami 2 | — | Upgrade nginx-debuginfoUpgrade nginx-mod-streamUpgrade nginx-filesystemUpgrade nginx-mod-develUpgrade nginx-coreUpgrade nginx-mod-http-xslt-filterUpgrade nginxUpgrade nginx-all-modulesUpgrade nginx-mod-http-image-filterUpgrade nginx-mod-http-perlUpgrade nginx-mod-http-geoipUpgrade nginx-mod-mail | Jul 8, 2026 | Jul 8, 2026 |
| Amazon_linux_2023 | — | Upgrade nginx-mod-http-image-filterUpgrade nginx-mod-mail-debuginfoUpgrade nginx-mod-http-xslt-filterUpgrade nginx-coreUpgrade nginx-debuginfoUpgrade nginx-mod-streamUpgrade nginx-mod-http-perlUpgrade nginx-mod-http-xslt-filter-debuginfoUpgrade nginx-debugsourceUpgrade nginx-core-debuginfoUpgrade nginx-mod-develUpgrade nginx-mod-stream-debuginfoUpgrade nginx-filesystemUpgrade nginx-mod-http-image-filter-debuginfoUpgrade nginx-mod-http-perl-debuginfoUpgrade nginx-all-modulesUpgrade nginx-mod-mailUpgrade nginx | Jul 8, 2026 | Jun 17, 2026 |
| Debian | — | Upgrade nginx | Jul 1, 2026 | Jul 1, 2026 |
| Freebsd | — | Upgrade nginxUpgrade nginx-devel | Jun 18, 2026 | Jun 17, 2026 |
| Gentoo Linux | — | Upgrade www-servers/nginx. | Aug 17, 2026 | Aug 17, 2026 |
| Nginx | — | Upgrade to nginx version 1.30.3Upgrade to nginx version 1.31.2 | Jun 18, 2026 | Jun 17, 2026 |
| Redhat_linux | — | Upgrade nginx-mod-develUpgrade nginx-mod-stream-debuginfoUpgrade nginx-mod-http-xslt-filter-debuginfoUpgrade nginx-core-debuginfoUpgrade nginx-mod-http-perl-debuginfoUpgrade nginx-filesystemUpgrade nginxUpgrade nginx-mod-http-image-filter-debuginfoUpgrade nginx-mod-http-perlUpgrade nginx-mod-mail-debuginfoUpgrade nginx-all-modulesUpgrade nginx-mod-streamUpgrade nginx-debuginfoUpgrade nginx-mod-mailUpgrade nginx-debugsourceUpgrade nginx-mod-http-image-filterUpgrade nginx-mod-http-xslt-filterUpgrade nginx-core | Jul 9, 2026 | Jun 17, 2026 |
| Rocky_linux | — | Upgrade nginx-mod-streamUpgrade nginx-debuginfoUpgrade nginx-debugsourceUpgrade nginx-coreUpgrade nginx-mod-mail-debuginfoUpgrade nginx-mod-http-xslt-filterUpgrade nginx-mod-http-image-filterUpgrade nginx-mod-http-perlUpgrade nginx-mod-stream-debuginfoUpgrade nginx-mod-http-xslt-filter-debuginfoUpgrade nginx-mod-develUpgrade nginx-mod-http-image-filter-debuginfoUpgrade nginx-mod-mailUpgrade nginx-mod-http-perl-debuginfoUpgrade nginxUpgrade nginx-core-debuginfo | Jul 10, 2026 | Jul 8, 2026 |
| Ubuntu | — | Upgrade nginx-coreUpgrade nginx-fullUpgrade nginxUpgrade nginx-extrasUpgrade nginx-light | Jun 22, 2026 | Jun 19, 2026 |
| Vmware Photon_os | — | Use 'tdnf update' to upgrade all packages to the latest version. | Aug 13, 2026 | Jun 17, 2026 |
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