NGINX 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.
Impact: This 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. Note: The ngx_http_slice_module module is not enabled by default; it's enabled with the --with-http_slice_module configuration parameter.
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-mod-develUpgrade nginx-mod-streamUpgrade nginx-coreUpgrade nginx-mod-mailUpgrade nginx-all-modulesUpgrade nginx-mod-http-image-filterUpgrade nginx-mod-http-xslt-filterUpgrade nginx-filesystemUpgrade nginx-mod-http-perlUpgrade nginx | Oct 11, 2026 | Aug 24, 2026 |
| Alpine Linux | — | Upgrade nginx | Jul 21, 2026 | Jul 15, 2026 |
| Amazon Linux Ami 2 | — | Upgrade nginx-filesystemUpgrade nginx-debuginfoUpgrade nginx-mod-streamUpgrade nginx-mod-http-xslt-filterUpgrade nginx-mod-http-perlUpgrade nginx-coreUpgrade nginxUpgrade nginx-mod-http-geoipUpgrade nginx-mod-http-image-filterUpgrade nginx-mod-develUpgrade nginx-all-modulesUpgrade nginx-mod-mail | Aug 5, 2026 | Aug 5, 2026 |
| Amazon_linux_2023 | — | Upgrade nginx-mod-mailUpgrade nginx-all-modulesUpgrade nginxUpgrade nginx-mod-develUpgrade nginx-filesystemUpgrade nginx-core-debuginfoUpgrade nginx-mod-http-perl-debuginfoUpgrade nginx-mod-streamUpgrade nginx-mod-http-perlUpgrade nginx-debugsourceUpgrade nginx-coreUpgrade nginx-mod-http-image-filterUpgrade nginx-mod-stream-debuginfoUpgrade nginx-debuginfoUpgrade nginx-mod-mail-debuginfoUpgrade nginx-mod-http-xslt-filter-debuginfoUpgrade nginx-mod-http-xslt-filterUpgrade nginx-mod-http-image-filter-debuginfo | Aug 10, 2026 | Jul 15, 2026 |
| Debian | — | Upgrade nginx | Sep 21, 2026 | Jul 15, 2026 |
| Freebsd | — | Upgrade angieUpgrade nginxUpgrade nginx-devel | Aug 3, 2026 | Aug 3, 2026 |
| Gentoo Linux | — | Upgrade www-servers/nginx. | Aug 17, 2026 | Aug 17, 2026 |
| Nginx | — | Upgrade to nginx version 1.30.4Upgrade to nginx version 1.31.3 | Jul 16, 2026 | Jul 15, 2026 |
| Redhat_linux | — | Upgrade nginx-mod-http-image-filterUpgrade nginx-mod-stream-debuginfoUpgrade nginx-mod-http-xslt-filterUpgrade nginx-coreUpgrade nginx-mod-mail-debuginfoUpgrade nginx-debuginfoUpgrade nginx-mod-http-image-filter-debuginfoUpgrade nginx-mod-streamUpgrade nginx-debugsourceUpgrade nginx-mod-http-perlUpgrade nginx-filesystemUpgrade nginx-all-modulesUpgrade nginx-core-debuginfoUpgrade nginx-mod-develUpgrade nginx-mod-mailUpgrade nginxUpgrade nginx-mod-http-xslt-filter-debuginfoUpgrade nginx-mod-http-perl-debuginfo | Jul 30, 2026 | Jul 15, 2026 |
| Rocky_linux | — | Upgrade nginx-debuginfoUpgrade nginx-mod-http-xslt-filter-debuginfoUpgrade nginx-debugsourceUpgrade nginx-mod-http-image-filter-debuginfoUpgrade nginx-mod-stream-debuginfoUpgrade nginx-mod-http-perl-debuginfoUpgrade nginx-mod-http-image-filterUpgrade nginx-mod-http-xslt-filterUpgrade nginx-mod-http-perlUpgrade nginx-mod-develUpgrade nginx-mod-streamUpgrade nginx-coreUpgrade nginx-core-debuginfoUpgrade nginxUpgrade nginx-mod-mail-debuginfoUpgrade nginx-mod-mail | Aug 26, 2026 | Aug 25, 2026 |
| Ubuntu | — | Upgrade nginx-lightUpgrade nginxUpgrade nginx-fullUpgrade nginx-coreUpgrade nginx-extras | Jul 21, 2026 | Jul 20, 2026 |
| Vmware Photon_os | — | Use 'tdnf update' to upgrade all packages to the latest version. | Aug 13, 2026 | Jul 15, 2026 |
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