{"id":"CVE-2026-42934","details":"NGINX Plus and NGINX 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.\n\n\n\n Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.","aliases":["BIT-nginx-2026-42934","BIT-nginx-gateway-2026-42934"],"modified":"2026-06-24T04:03:21.457610655Z","published":"2026-05-13T16:16:49.910Z","related":["SUSE-SU-2026:2050-1","SUSE-SU-2026:21832-1","SUSE-SU-2026:2370-1","openSUSE-SU-2026:10796-1","openSUSE-SU-2026:20796-1"],"database_specific":{"unresolved_ranges":[{"source":"CPE_RANGE","extracted_events":[{"introduced":"4.3.0"},{"last_affected":"4.7.0"}],"cpes":["cpe:2.3:a:f5:dos:*:*:*:*:*:nginx:*:*"],"vendor_product":"f5:dos"},{"source":"CPE_RANGE","extracted_events":[{"introduced":"2.16.0"},{"last_affected":"2.22.0"}],"vendor_product":"f5:nginx_instance_manager","cpes":["cpe:2.3:a:f5:nginx_instance_manager:*:*:*:*:*:*:*:*"]},{"source":"CPE_RANGE","extracted_events":[{"introduced":"r32"},{"last_affected":"r36"}],"vendor_product":"f5:nginx_plus","cpes":["cpe:2.3:a:f5:nginx_plus:*:*:*:*:*:*:*:*"]},{"source":"CPE_RANGE","extracted_events":[{"introduced":"4.9.0"},{"last_affected":"4.16.0"},{"introduced":"5.1.0"},{"last_affected":"5.8.0"},{"introduced":"5.9.0"},{"last_affected":"5.12.1"}],"vendor_product":"f5:waf","cpes":["cpe:2.3:a:f5:waf:*:*:*:*:*:nginx:*:*"]},{"source":"CPE_STRING","extracted_events":[{"last_affected":"4.8.0"}],"cpes":["cpe:2.3:a:f5:dos:4.8.0:*:*:*:*:nginx:*:*"],"vendor_product":"f5:dos"}]},"references":[{"type":"ADVISORY","url":"https://my.f5.com/manage/s/article/K000161028"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/nginx/kubernetes-ingress","events":[{"introduced":"33971b8ff54bc55785a7b38c07a21e03bda25080"},{"last_affected":"561824f3077b7615c2fa764bd6d8e7a47e184857"},{"introduced":"81bae7d0360fdf277b2d3e355d02e410ee211ef8"},{"last_affected":"43349033e28d0b6aa38773ff840deba079654a4f"},{"introduced":"8dfabca757830d0821e86206c2db83044e6696f0"},{"last_affected":"cd864d71a5e3b6698b80daee02b2785c4020db10"}],"database_specific":{"source":"CPE_RANGE","cpe":"cpe:2.3:a:f5:nginx_ingress_controller:*:*:*:*:*:*:*:*","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":"5.4.2"}]}}],"versions":["v4.0.1","v4.0.0"],"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-42934.json"}},{"ranges":[{"type":"GIT","repo":"https://github.com/nginx/nginx","events":[{"introduced":"ef809b86c36a9584a15df6caac2eb727ceacc10d"},{"last_affected":"955370fc8c12b1a945941f844adc9df49a0f3f32"},{"introduced":"a2a09a84eb0a7059880500e70b40796ab1dd0c4d"},{"last_affected":"6e14e954aaacce9a433d9b07b4653809c7594ab8"}],"database_specific":{"source":"CPE_RANGE","cpe":"cpe:2.3:a:f5:nginx_open_source:*:*:*:*:*:*:*:*","extracted_events":[{"introduced":"0.3.50"},{"last_affected":"0.9.7"},{"introduced":"1.0.0"},{"last_affected":"1.30.0"}]}}],"versions":["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-1.9.14","release-1.9.13","release-1.9.12","release-1.9.11","release-1.9.10","release-1.9.9","release-1.9.8","release-1.9.7","release-1.9.6","release-1.9.5","release-1.9.4","release-1.9.3","release-1.9.2","release-1.9.1","release-1.9.0","release-1.7.12","release-1.7.11","release-1.7.10","release-1.7.9","release-1.7.8","release-1.7.7","release-1.7.6","release-1.7.5","release-1.7.4","release-1.7.3","release-1.7.2","release-1.7.1","release-1.7.0","release-1.5.13","release-1.5.12","release-1.5.11","release-1.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