{"id":"CVE-2026-40460","details":"When NGINX Plus or NGINX Open Source are configured to use the HTTP/3 QUIC module, an attacker may be able to spoof their source IP address allowing for bypass of authorization or bypass of rate limiting.  Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.","aliases":["BIT-nginx-2026-40460","BIT-nginx-gateway-2026-40460"],"modified":"2026-08-17T16:27:01.598105618Z","published":"2026-05-13T16:16:42.823Z","related":["CGA-j9g3-hcc7-97jq","SUSE-SU-2026:22943-1","SUSE-SU-2026:22951-1","openSUSE-SU-2026:10796-1","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:*:*"]},{"source":"CPE_RANGE","vendor_product":"f5:nginx_ingress_controller","cpes":["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"}]},{"cpes":["cpe:2.3:a:f5:nginx_instance_manager:*:*:*:*:*:*:*:*"],"extracted_events":[{"introduced":"2.16.0"},{"last_affected":"2.22.0"}],"source":"CPE_RANGE","vendor_product":"f5:nginx_instance_manager"},{"extracted_events":[{"introduced":"r32"},{"last_affected":"r36"}],"source":"CPE_RANGE","vendor_product":"f5:nginx_plus","cpes":["cpe:2.3:a:f5:nginx_plus:*:*:*:*:*:*:*:*"]},{"cpes":["cpe:2.3:a:f5:waf:*:*:*:*:*:nginx:*:*"],"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"}],"source":"CPE_RANGE","vendor_product":"f5:waf"},{"source":"CPE_STRING","vendor_product":"f5:dos","cpes":["cpe:2.3:a:f5:dos:4.8.0:*:*:*:*:nginx:*:*"],"extracted_events":[{"introduced":"4.8.0"},{"last_affected":"4.8.0"}]}]},"references":[{"type":"ADVISORY","url":"https://my.f5.com/manage/s/article/K000161068"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/nginx/nginx","events":[{"introduced":"05760b62e9799df559246af9f65c9e514617f558"},{"last_affected":"6e14e954aaacce9a433d9b07b4653809c7594ab8"}],"database_specific":{"source":"CPE_RANGE","cpe":"cpe:2.3:a:f5:nginx_open_source:*:*:*:*:*:*:*:*","extracted_events":[{"introduced":"1.25.0"},{"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"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-40460.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:*:*:*:*:*:*:*:*","extracted_events":[{"introduced":"1.3.0"},{"last_affected":"1.6.2"},{"introduced":"2.0.0"},{"last_affected":"2.6.0"}],"source":"CPE_RANGE"}}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-40460.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V4","score":"CVSS:4.0/AV:N/AC:L/AT:N/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"}]}