{"id":"CVE-2026-48142","details":"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. \n\n\nNote: Software versions which have reached End of Technical Support (EoTS) are not evaluated.","aliases":["BIT-nginx-2026-48142","BIT-nginx-gateway-2026-48142","BIT-nginx-gateway-fabric-2026-48142"],"modified":"2026-08-13T04:02:52.971487685Z","published":"2026-06-17T15:16:59.040Z","related":["CGA-8cxv-rhhf-pr4p","SUSE-SU-2026:22943-1","SUSE-SU-2026:22951-1","SUSE-SU-2026:3329-1","SUSE-SU-2026:3448-1","openSUSE-SU-2026:11066-1","openSUSE-SU-2026:21439-1"],"database_specific":{"unresolved_ranges":[{"extracted_events":[{"introduced":"4.3.0"},{"last_affected":"4.7.0"}],"source":"CPE_RANGE","vendor_product":"f5:dos","cpes":["cpe:2.3:a:f5:dos:*:*:*:*:*:nginx:*:*"]},{"cpes":["cpe:2.3:a:f5:nginx_ingress_controller:*:*:*:*:continuous_releases:*:*:*"],"extracted_events":[{"introduced":"3.5.0"},{"last_affected":"3.7.2"},{"introduced":"4.0.0"},{"last_affected":"4.0.1"},{"introduced":"5.0.0"},{"last_affected":"5.5.0"}],"source":"CPE_RANGE","vendor_product":"f5:nginx_ingress_controller"},{"source":"CPE_RANGE","vendor_product":"f5:nginx_instance_manager","cpes":["cpe:2.3:a:f5:nginx_instance_manager:*:*:*:*:*:*:*:*"],"extracted_events":[{"introduced":"2.17.0"},{"last_affected":"2.22.0"}]},{"vendor_product":"f5:nginx_plus","cpes":["cpe:2.3:a:f5:nginx_plus:*:*:*:*:continuous_releases:*:*:*","cpe:2.3:a:f5:nginx_plus:*:*:*:*:long-term_support:*:*:*"],"extracted_events":[{"introduced":"37.0.0.1"},{"fixed":"37.0.2.1"},{"introduced":"r33"},{"fixed":"r36"}],"source":"CPE_RANGE"},{"vendor_product":"f5:waf","cpes":["cpe:2.3:a:f5:waf:*:*:*:*:*:nginx:*:*"],"extracted_events":[{"introduced":"4.10.0"},{"last_affected":"4.16.0"},{"introduced":"5.2.0"},{"last_affected":"5.8.0"},{"introduced":"5.9.0"},{"last_affected":"5.13.1"}],"source":"CPE_RANGE"},{"cpes":["cpe:2.3:a:f5:dos:4.9.0:*:*:*:*:nginx:*:*"],"extracted_events":[{"introduced":"4.9.0"},{"last_affected":"4.9.0"}],"source":"CPE_STRING","vendor_product":"f5:dos"},{"extracted_events":[{"introduced":"r36-NA"},{"last_affected":"r36-NA"},{"introduced":"r36-p1"},{"last_affected":"r36-p1"},{"introduced":"r36-p2"},{"last_affected":"r36-p2"},{"introduced":"r36-p3"},{"last_affected":"r36-p3"},{"introduced":"r36-p4"},{"last_affected":"r36-p4"},{"introduced":"r36-p5"},{"last_affected":"r36-p5"}],"source":"CPE_STRING","vendor_product":"f5:nginx_plus","cpes":["cpe:2.3:a:f5:nginx_plus:r36:-:*:*:continuous_releases:*:*:*","cpe:2.3:a:f5:nginx_plus:r36:p1:*:*:continuous_releases:*:*:*","cpe:2.3:a:f5:nginx_plus:r36:p2:*:*:continuous_releases:*:*:*","cpe:2.3:a:f5:nginx_plus:r36:p3:*:*:continuous_releases:*:*:*","cpe:2.3:a:f5:nginx_plus:r36:p4:*:*:continuous_releases:*:*:*","cpe:2.3:a:f5:nginx_plus:r36:p5:*:*:continuous_releases:*:*:*"]}]},"references":[{"type":"ADVISORY","url":"https://my.f5.com/manage/s/article/K000161585"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/nginx/nginx","events":[{"introduced":"a2a09a84eb0a7059880500e70b40796ab1dd0c4d"},{"last_affected":"a92a537860c7b87d3793d9eb41c9cf3ed833b53c"},{"introduced":"e8053c867f9ab14f323e3019ccab585d857abb66"},{"last_affected":"d44205284fa41662da803b796d6056fc1e59b1f3"}],"database_specific":{"cpe":"cpe:2.3:a:f5:nginx_open_source:*:*:*:*:*:*:*:*","extracted_events":[{"introduced":"1.0.0"},{"last_affected":"1.30.2"},{"introduced":"1.31.0"},{"last_affected":"1.31.1"}],"source":"CPE_RANGE"}}],"versions":["release-1.30.2","release-1.31.1","release-1.30.1","release-1.31.0","release-1.30.0","release-1.29.8","release-1.29.7","release-1.29.6","release-1.29.5","release-1.29.4","release-1.29.3","release-1.29.2","release-1.29.1","release-1.29.0","release-1.27.5","release-1.27.4","release-1.27.3","release-1.27.2","release-1.27.1","release-1.27.0","release-1.25.5","release-1.25.4","release-1.25.3","release-1.25.2","release-1.25.1","release-1.25.0","release-1.23.4","release-1.23.3","release-1.23.2","release-1.23.1","release-1.23.0","release-1.21.6","release-1.21.5","release-1.21.4","release-1.21.3","release-1.21.2","release-1.21.1","release-1.21.0","release-1.19.10","release-1.19.9","release-1.19.8","release-1.19.7","release-1.19.6","release-1.19.5","release-1.19.4","release-1.19.3","release-1.19.2","release-1.19.1","release-1.19.0","release-1.17.10","release-1.17.9","release-1.17.8","release-1.17.7","release-1.17.6","release-1.17.5","release-1.17.4","release-1.17.3","release-1.17.2","release-1.17.1","release-1.17.0","release-1.15.12","release-1.15.11","release-1.15.10","release-1.15.9","release-1.15.8","release-1.15.7","release-1.15.6","release-1.15.5","release-1.15.4","release-1.15.3","release-1.15.2","release-1.15.1","release-1.15.0","release-1.13.12","release-1.13.11","release-1.13.10","release-1.13.9","release-1.13.8","release-1.13.7","release-1.13.6","release-1.13.5","release-1.13.4","release-1.13.3","release-1.13.2","release-1.13.1","release-1.13.0","release-1.11.13","release-1.11.12","release-1.11.11","release-1.11.10","release-1.11.9","release-1.11.8","release-1.11.7","release-1.11.6","release-1.11.5","release-1.11.4","release-1.11.3","release-1.11.2","release-1.11.1","release-1.11.0","release-1.9.15","release-1.9.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