{"id":"UBUNTU-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.","modified":"2026-06-01T19:00:23.597088472Z","published":"2026-05-13T16:16:00Z","related":["USN-8354-1"],"upstream":["CVE-2026-40460"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-40460"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2026-40460"},{"type":"REPORT","url":"https://my.f5.com/manage/s/article/K000161068"},{"type":"REPORT","url":"https://nginx.org/en/security_advisories.html"},{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-8354-1"}],"affected":[{"package":{"name":"nginx","ecosystem":"Ubuntu:25.10","purl":"pkg:deb/ubuntu/nginx?arch=source&distro=questing"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.28.0-6ubuntu1.4"}]}],"versions":["1.26.3-2ubuntu1","1.26.3-3ubuntu1","1.26.3-3ubuntu2","1.26.3-3ubuntu3","1.28.0-3ubuntu1","1.28.0-4ubuntu1","1.28.0-6ubuntu1","1.28.0-6ubuntu1.1","1.28.0-6ubuntu1.2","1.28.0-6ubuntu1.3"],"ecosystem_specific":{"availability":"No subscription required","binaries":[{"binary_version":"1.28.0-6ubuntu1.4","binary_name":"libnginx-mod-http-geoip"},{"binary_version":"1.28.0-6ubuntu1.4","binary_name":"libnginx-mod-http-image-filter"},{"binary_name":"libnginx-mod-http-perl","binary_version":"1.28.0-6ubuntu1.4"},{"binary_version":"1.28.0-6ubuntu1.4","binary_name":"libnginx-mod-http-xslt-filter"},{"binary_name":"libnginx-mod-mail","binary_version":"1.28.0-6ubuntu1.4"},{"binary_version":"1.28.0-6ubuntu1.4","binary_name":"libnginx-mod-stream"},{"binary_version":"1.28.0-6ubuntu1.4","binary_name":"libnginx-mod-stream-geoip"},{"binary_name":"nginx","binary_version":"1.28.0-6ubuntu1.4"},{"binary_name":"nginx-common","binary_version":"1.28.0-6ubuntu1.4"},{"binary_version":"1.28.0-6ubuntu1.4","binary_name":"nginx-core"},{"binary_name":"nginx-extras","binary_version":"1.28.0-6ubuntu1.4"},{"binary_version":"1.28.0-6ubuntu1.4","binary_name":"nginx-full"},{"binary_version":"1.28.0-6ubuntu1.4","binary_name":"nginx-light"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-40460.json"}},{"package":{"name":"nginx","ecosystem":"Ubuntu:26.04:LTS","purl":"pkg:deb/ubuntu/nginx?arch=source&distro=resolute"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.28.3-2ubuntu1.2"}]}],"versions":["1.28.0-6ubuntu1","1.28.1-2ubuntu1","1.28.1-3ubuntu1","1.28.2-2ubuntu1","1.28.3-2ubuntu1","1.28.3-2ubuntu1.1"],"ecosystem_specific":{"binaries":[{"binary_name":"libnginx-mod-http-geoip","binary_version":"1.28.3-2ubuntu1.2"},{"binary_version":"1.28.3-2ubuntu1.2","binary_name":"libnginx-mod-http-image-filter"},{"binary_name":"libnginx-mod-http-perl","binary_version":"1.28.3-2ubuntu1.2"},{"binary_name":"libnginx-mod-http-xslt-filter","binary_version":"1.28.3-2ubuntu1.2"},{"binary_name":"libnginx-mod-mail","binary_version":"1.28.3-2ubuntu1.2"},{"binary_version":"1.28.3-2ubuntu1.2","binary_name":"libnginx-mod-stream"},{"binary_name":"libnginx-mod-stream-geoip","binary_version":"1.28.3-2ubuntu1.2"},{"binary_name":"nginx","binary_version":"1.28.3-2ubuntu1.2"},{"binary_name":"nginx-common","binary_version":"1.28.3-2ubuntu1.2"},{"binary_version":"1.28.3-2ubuntu1.2","binary_name":"nginx-core"},{"binary_version":"1.28.3-2ubuntu1.2","binary_name":"nginx-extras"},{"binary_version":"1.28.3-2ubuntu1.2","binary_name":"nginx-full"},{"binary_name":"nginx-light","binary_version":"1.28.3-2ubuntu1.2"}],"availability":"No subscription required"},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-40460.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L"},{"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"},{"type":"Ubuntu","score":"medium"}]}