{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-40460","assignerOrgId":"9dacffd4-cb11-413f-8451-fbbfd4ddc0ab","state":"PUBLISHED","assignerShortName":"f5","dateReserved":"2026-04-30T23:04:27.969Z","datePublished":"2026-05-13T14:12:45.291Z","dateUpdated":"2026-05-13T16:06:43.631Z"},"containers":{"cna":{"affected":[{"defaultStatus":"unknown","modules":["ngx_quic_module"],"product":"NGINX Plus","vendor":"F5","versions":[{"lessThan":"*","status":"unaffected","version":"R37","versionType":"custom"},{"lessThan":"R36 P4","status":"affected","version":"R36","versionType":"custom"},{"lessThan":"R32 P6","status":"affected","version":"R32","versionType":"custom"}]},{"defaultStatus":"unaffected","modules":["ngx_quic_module"],"product":"NGINX Open Source","vendor":"F5","versions":[{"lessThan":"*","status":"unaffected","version":"1.31.0","versionType":"semver"},{"lessThan":"1.30.1","status":"affected","version":"1.26.0","versionType":"semver"}]}],"credits":[{"lang":"en","type":"reporter","value":"F5 acknowledges Rodrigo Laneth of Miralium Research for bringing this issue to our attention and following the highest standards of coordinated disclosure."}],"datePublic":"2026-05-13T14:00:00.000Z","descriptions":[{"lang":"en","supportingMedia":[{"base64":false,"type":"text/html","value":"<span style=\"background-color: rgb(255, 255, 255);\">When NGINX Plus or NGINX Open Source are configured to use the </span><strong>HTTP/3 QUIC</strong><span style=\"background-color: rgb(255, 255, 255);\">&nbsp;module, an attacker may be able to spoof their source IP address allowing for bypass of authorization or bypass of rate limiting.&nbsp;&nbsp;</span>Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated."}],"value":"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."}],"metrics":[{"cvssV3_1":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"LOW","baseScore":6.5,"baseSeverity":"MEDIUM","confidentialityImpact":"LOW","integrityImpact":"NONE","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L","version":"3.1"},"format":"CVSS","scenarios":[{"lang":"en","value":"GENERAL"}]},{"cvssV4_0":{"Automatable":"NOT_DEFINED","Recovery":"NOT_DEFINED","Safety":"NOT_DEFINED","attackComplexity":"LOW","attackRequirements":"NONE","attackVector":"NETWORK","baseScore":6.9,"baseSeverity":"MEDIUM","privilegesRequired":"NONE","providerUrgency":"NOT_DEFINED","subAvailabilityImpact":"NONE","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","userInteraction":"NONE","valueDensity":"NOT_DEFINED","vectorString":"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","version":"4.0","vulnAvailabilityImpact":"LOW","vulnConfidentialityImpact":"LOW","vulnIntegrityImpact":"NONE","vulnerabilityResponseEffort":"NOT_DEFINED"},"format":"CVSS","scenarios":[{"lang":"en","value":"GENERAL"}]}],"problemTypes":[{"descriptions":[{"cweId":"CWE-290","description":"CWE-290 Authentication Bypass by Spoofing","lang":"en","type":"CWE"}]}],"providerMetadata":{"orgId":"9dacffd4-cb11-413f-8451-fbbfd4ddc0ab","shortName":"f5","dateUpdated":"2026-05-13T14:12:45.291Z"},"references":[{"tags":["vendor-advisory","patch"],"url":"https://my.f5.com/manage/s/article/K000161068"}],"source":{"discovery":"EXTERNAL"},"title":"NGINX ngx_quic_module vulnerability","x_generator":{"engine":"F5 SIRTBot v1.0"}},"adp":[{"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-05-13T15:54:59.053463Z","id":"CVE-2026-40460","options":[{"Exploitation":"none"},{"Automatable":"yes"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"title":"CISA ADP Vulnrichment","providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2026-05-13T16:06:43.631Z"}}]}}