CVE-2026-48142
Fixed in a distro release EPSS <1%CVSS 4.8
NGINX Plus and NGINX Open Source have a vulnerability in the ngx_http_charset_module module. When content is served or proxied through a location block with both source_charset utf-8; and a charset directive (for example, charset koi8-r;) configured, remote, unauthenticated attackers can send requests (in conjunction with conditions beyond their 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.
Products: F5 NGINX Open Source, F5 NGINX Plus
Distro releases
| Release | Package | Fixed in |
|---|---|---|
| Alpine 3.21 | nginx | 1.26.3-r2 |
| Alpine 3.22 | nginx | 1.28.3-r4 |
| Alpine 3.23 | nginx | 1.28.3-r4 |
| Alpine 3.24 | nginx | 1.30.3-r0 |
| Amazon Linux 2023 | nginx | 1:1.30.3-1.amzn2023.0.1 |
| Amazon Linux 2023 | nginx-all-modules | 1:1.30.3-1.amzn2023.0.1 |
| Amazon Linux 2023 | nginx-core | 1:1.30.3-1.amzn2023.0.1 |
| Amazon Linux 2023 | nginx-filesystem | 1:1.30.3-1.amzn2023.0.1 |
| Amazon Linux 2023 | nginx-mod-devel | 1:1.30.3-1.amzn2023.0.1 |
| Amazon Linux 2023 | nginx-mod-http-image-filter | 1:1.30.3-1.amzn2023.0.1 |
| Amazon Linux 2023 | nginx-mod-http-perl | 1:1.30.3-1.amzn2023.0.1 |
| Amazon Linux 2023 | nginx-mod-http-xslt-filter | 1:1.30.3-1.amzn2023.0.1 |
| Amazon Linux 2023 | nginx-mod-mail | 1:1.30.3-1.amzn2023.0.1 |
| Amazon Linux 2023 | nginx-mod-stream | 1:1.30.3-1.amzn2023.0.1 |
| Chainguard | ingress-nginx-controller-1.15 | 1.15.8-r0 |
| Chainguard | ingress-nginx-controller-fips-1.15 | 1.15.8-r0 |
| Chainguard | nginx-mainline | 1.31.2-r0 |
| Chainguard | nginx-stable | 1.30.3-r0 |
| Chainguard | nginx-stable-config | 1.30.3-r0 |
| Chainguard | nginx-stable-config-compat | 1.30.3-r0 |
| Chainguard | nginx-stable-fastcgi-params | 1.30.3-r0 |
| Chainguard | nginx-stable-mime-types | 1.30.3-r0 |
| Chainguard | nginx-stable-mod-http_geoip | 1.30.3-r0 |
| Chainguard | nginx-stable-mod-http_image_filter | 1.30.3-r0 |
| Chainguard | nginx-stable-mod-http_perl | 1.30.3-r0 |
| Chainguard | nginx-stable-mod-http_xslt_filter | 1.30.3-r0 |
| Chainguard | nginx-stable-mod-mail | 1.30.3-r0 |
| Chainguard | nginx-stable-mod-stream | 1.30.3-r0 |
| Chainguard | nginx-stable-mod-stream_geoip | 1.30.3-r0 |
| Chainguard | nginx-stable-oci-entrypoint-compat | 1.30.3-r0 |
| Chainguard | nginx-stable-package-config | 1.30.3-r0 |
| Chainguard | nginx-stable-scgi-params | 1.30.3-r0 |
| Chainguard | nginx-stable-src | 1.30.3-r0 |
| Chainguard | nginx-stable-syslog-config | 1.30.3-r0 |
| Chainguard | nginx-stable-uwsgi-params | 1.30.3-r0 |
| Debian 12 | nginx | 1.22.1-9+deb12u9 |
| Debian 13 | nginx | 1.26.3-3+deb13u7 |
| Debian 14 | nginx | 1.30.1-5 |
| Red Hat hummingbird 1 | nginx | 0:1.30.3-2.hum1 |
| Red Hat hummingbird 1 | nginx-all-modules | 0:1.30.3-2.hum1 |
| Red Hat hummingbird 1 | nginx-core | 0:1.30.3-2.hum1 |
| Red Hat hummingbird 1 | nginx-filesystem | 0:1.30.3-2.hum1 |
| Red Hat hummingbird 1 | nginx-mod-devel | 0:1.30.3-2.hum1 |
| Red Hat hummingbird 1 | nginx-mod-http-geoip | 0:1.30.3-2.hum1 |
| Red Hat hummingbird 1 | nginx-mod-http-image-filter | 0:1.30.3-2.hum1 |
| Red Hat hummingbird 1 | nginx-mod-http-perl | 0:1.30.3-2.hum1 |
| Red Hat hummingbird 1 | nginx-mod-http-xslt-filter | 0:1.30.3-2.hum1 |
| Red Hat hummingbird 1 | nginx-mod-mail | 0:1.30.3-2.hum1 |
| Red Hat hummingbird 1 | nginx-mod-stream | 0:1.30.3-2.hum1 |
| Red Hat hummingbird 1 | nginx-mod-stream-geoip | 0:1.30.3-2.hum1 |
| SUSE Linux Enterprise High Performance Computing 15 SP4-ESPOS | nginx | 1.21.5-150400.3.25.1 |
| SUSE Linux Enterprise High Performance Computing 15 SP4-LTSS | nginx | 1.21.5-150400.3.25.1 |
| SUSE Linux Enterprise High Performance Computing 15 SP5-ESPOS | nginx | 1.21.5-150400.3.25.1 |
| SUSE Linux Enterprise High Performance Computing 15 SP5-LTSS | nginx | 1.21.5-150400.3.25.1 |
| SUSE Linux Enterprise Module for Server Applications 15 SP7 | nginx | 1.21.5-150600.10.24.1 |
| SUSE Linux Enterprise Server 15 SP4-LTSS | nginx | 1.21.5-150400.3.25.1 |
| SUSE Linux Enterprise Server 15 SP5-LTSS | nginx | 1.21.5-150400.3.25.1 |
| SUSE Linux Enterprise Server 15 SP6-LTSS | nginx | 1.21.5-150600.10.24.1 |
| SUSE Linux Enterprise Server 16.0 | nginx | 1.27.2-160000.6.1 |
| SUSE Linux Enterprise Server for SAP Applications 15 SP4 | nginx | 1.21.5-150400.3.25.1 |
| SUSE Linux Enterprise Server for SAP Applications 15 SP5 | nginx | 1.21.5-150400.3.25.1 |
| SUSE Linux Enterprise Server for SAP Applications 15 SP6 | nginx | 1.21.5-150600.10.24.1 |
| SUSE Linux Enterprise Server for SAP applications 16.0 | nginx | 1.27.2-160000.6.1 |
| Ubuntu 22.04 LTS | nginx | 1.18.0-6ubuntu14.16 |
| Ubuntu 24.04 LTS | nginx | 1.24.0-2ubuntu7.13 |
| Ubuntu 25.10 | nginx | 1.28.0-6ubuntu1.8 |
| Ubuntu 26.04 LTS | nginx | 1.28.3-2ubuntu1.6 |
| Ubuntu Pro 14.04 LTS | nginx | no fix |
| Ubuntu Pro 16.04 LTS | nginx | no fix |
| Ubuntu Pro 18.04 LTS | nginx | no fix |
| Ubuntu Pro 20.04 LTS | nginx | no fix |
| Wolfi | ingress-nginx-controller-1.15 | 1.15.8-r0 |
| Wolfi | nginx-mainline | 1.31.2-r0 |
| Wolfi | nginx-stable | 1.30.3-r0 |
| Wolfi | nginx-stable-config | 1.30.3-r0 |
| Wolfi | nginx-stable-config-compat | 1.30.3-r0 |
| Wolfi | nginx-stable-fastcgi-params | 1.30.3-r0 |
| Wolfi | nginx-stable-mime-types | 1.30.3-r0 |
| Wolfi | nginx-stable-mod-http_geoip | 1.30.3-r0 |
| Wolfi | nginx-stable-mod-http_image_filter | 1.30.3-r0 |
| Wolfi | nginx-stable-mod-http_perl | 1.30.3-r0 |
| Wolfi | nginx-stable-mod-http_xslt_filter | 1.30.3-r0 |
| Wolfi | nginx-stable-mod-mail | 1.30.3-r0 |
| Wolfi | nginx-stable-mod-stream | 1.30.3-r0 |
| Wolfi | nginx-stable-mod-stream_geoip | 1.30.3-r0 |
| Wolfi | nginx-stable-package-config | 1.30.3-r0 |
| Wolfi | nginx-stable-scgi-params | 1.30.3-r0 |
| Wolfi | nginx-stable-src | 1.30.3-r0 |
| Wolfi | nginx-stable-syslog-config | 1.30.3-r0 |
| Wolfi | nginx-stable-uwsgi-params | 1.30.3-r0 |
| openSUSE Leap 16.0 | nginx | 1.27.2-160000.6.1 |
| openSUSE Tumbleweed | nginx | 1.31.2-1.1 |