{"id":"CVE-2026-40701","details":"NGINX Plus and NGINX Open Source have a vulnerability in the ngx_http_ssl_module module when the ssl_verify_client directive is set to \"on\" or \"optional,\" and the ssl_ocsp directive is set to \"on\" or the leaf parameters are configured with a resolver. With this configuration, an unauthenticated attacker can send requests along with conditions beyond its control that may cause a heap-use-after-free error in the NGINX worker process. This vulnerability may result in limited modification of data or the NGINX worker process restarting.\n\n\n\n Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.","aliases":["BIT-nginx-2026-40701","BIT-nginx-gateway-2026-40701"],"modified":"2026-06-26T12:05:55.475580912Z","published":"2026-05-13T16:16:43.863Z","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":[{"vendor_product":"f5:dos","cpes":["cpe:2.3:a:f5:dos:*:*:*:*:*:nginx:*:*"],"source":"CPE_RANGE","extracted_events":[{"introduced":"4.3.0"},{"last_affected":"4.7.0"}]},{"vendor_product":"f5:nginx_instance_manager","cpes":["cpe:2.3:a:f5:nginx_instance_manager:*:*:*:*:*:*:*:*"],"source":"CPE_RANGE","extracted_events":[{"introduced":"2.16.0"},{"last_affected":"2.22.0"}]},{"vendor_product":"f5:nginx_plus","source":"CPE_RANGE","cpes":["cpe:2.3:a:f5:nginx_plus:*:*:*:*:*:*:*:*"],"extracted_events":[{"introduced":"r32"},{"last_affected":"r36"}]},{"vendor_product":"f5:waf","cpes":["cpe:2.3:a:f5:waf:*:*:*:*:*:nginx:*:*"],"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:dos","source":"CPE_STRING","cpes":["cpe:2.3:a:f5:dos:4.8.0:*:*:*:*:nginx:*:*"],"extracted_events":[{"last_affected":"4.8.0"}]}]},"references":[{"type":"ADVISORY","url":"https://my.f5.com/manage/s/article/K000161021"}],"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":{"cpe":"cpe:2.3:a:f5:nginx_ingress_controller:*:*:*:*:*:*:*:*","source":"CPE_RANGE","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-2026-40701.json"}},{"ranges":[{"type":"GIT","repo":"https://github.com/nginx/nginx","events":[{"introduced":"87c8507f20eb32e757aa3ef2e709f395f577a7f6"},{"last_affected":"6e14e954aaacce9a433d9b07b4653809c7594ab8"}],"database_specific":{"cpe":"cpe:2.3:a:f5:nginx_open_source:*:*:*:*:*:*:*:*","source":"CPE_RANGE","extracted_events":[{"introduced":"1.19.0"},{"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"],"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-40701.json"}},{"ranges":[{"type":"GIT","repo":"https://github.com/nginx/nginx-gateway-fabric","events":[{"introduced":"3a372747333fb1db372af7cf0b18ed7eef7c91f7"},{"last_affected":"532db6a20b2912fe397211eef9f8d564d46a4bdd"},{"introduced":"7dad8b31e3f0c3eadce36fed8c276e83e6583d24"},{"last_affected":"95a66d8cec0ce98e1985aeab728317c5ba7ec0c6"}],"database_specific":{"cpe":"cpe:2.3:a:f5:nginx_gateway_fabric:*:*:*:*:*:*:*:*","source":"CPE_RANGE","extracted_events":[{"introduced":"1.3.0"},{"last_affected":"1.6.2"},{"introduced":"2.0.0"},{"last_affected":"2.6.0"}]}}],"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-40701.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V4","score":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:N/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X"}]}