{"id":"CVE-2026-95101","state":"PUBLISHED","title":"NGINX ngx_http_v3_module vulnerability","description":"Description\nNGINX Plus and NGINX Open Source have a vulnerability in the ngx_http_v3_module module. When using HTTP/3 with \n\nproxy_request_buffering on directive, an unauthenticated attacker may be able to inject data in the proxied request.\n\nImpact\n\n\nThis vulnerability may allow remote attackers to \n\ninject data in the proxied request.  There is no control plane exposure; this is a data plane issue only.\n\n\n\n\n\n\nNote: Software versions which have reached End of Technical Support (EoTS) are not evaluated.","publishedAt":"2026-10-14T14:40:28.955Z","updatedAt":"2026-10-15T16:43:46.630Z","severity":{"score":6.9,"label":"Medium","version":"4.0","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N","source":"f5"},"assigner":"f5","products":["F5 NGINX Plus","F5 NGINX Open Source"],"affected":[{"vendor":"F5","product":"NGINX Plus","defaultStatus":"unknown","versions":[{"version":"37.1.0","status":"affected","lessThan":"37.2.0.1","versionType":"custom"},{"version":"37.0.0","status":"affected","lessThan":"37.0.7.1","versionType":"custom"},{"version":"R36","status":"affected","lessThan":"*","versionType":"custom"},{"version":"R35","status":"affected","lessThan":"*","versionType":"custom"},{"version":"R34","status":"affected","lessThan":"*","versionType":"custom"},{"version":"R33","status":"affected","lessThan":"*","versionType":"custom"}],"modules":["ngx_http_v3_module"]},{"vendor":"F5","product":"NGINX Open Source","defaultStatus":"unknown","versions":[{"version":"1.31.0","status":"affected","lessThan":"1.31.7","versionType":"custom"},{"version":"1.30.0","status":"affected","lessThan":"1.30.6","versionType":"custom"},{"version":"1.25.0","status":"affected","lessThan":"*","versionType":"custom"}],"modules":["ngx_http_v3_module"]}],"references":["https://my.f5.com/manage/s/article/K000162613"],"weaknesses":["CWE-172"],"ingestedAt":"2026-10-29T20:13:43.249Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/95xxx/CVE-2026-95101.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-95101","state":"PUBLISHED","datePublished":"2026-10-14T14:40:28.955Z","dateUpdated":"2026-10-15T16:43:46.630Z","assignerShortName":"f5","assignerOrgId":"9dacffd4-cb11-413f-8451-fbbfd4ddc0ab","dateReserved":"2026-09-30T17:31:09.137Z"},"containers":{"cna":{"title":"NGINX ngx_http_v3_module vulnerability","descriptions":[{"lang":"en","value":"Description\nNGINX Plus and NGINX Open Source have a vulnerability in the ngx_http_v3_module module. When using HTTP/3 with \n\nproxy_request_buffering on directive, an unauthenticated attacker may be able to inject data in the proxied request.\n\nImpact\n\n\nThis vulnerability may allow remote attackers to \n\ninject data in the proxied request.  There is no control plane exposure; this is a data plane issue only.\n\n\n\n\n\n\nNote: Software versions which have reached End of Technical Support (EoTS) are not evaluated."}],"affected":[{"vendor":"F5","product":"NGINX Plus","defaultStatus":"unknown","versions":[{"version":"37.1.0","status":"affected","lessThan":"37.2.0.1","versionType":"custom"},{"version":"37.0.0","status":"affected","lessThan":"37.0.7.1","versionType":"custom"},{"version":"R36","status":"affected","lessThan":"*","versionType":"custom"},{"version":"R35","status":"affected","lessThan":"*","versionType":"custom"},{"version":"R34","status":"affected","lessThan":"*","versionType":"custom"},{"version":"R33","status":"affected","lessThan":"*","versionType":"custom"}],"modules":["ngx_http_v3_module"]},{"vendor":"F5","product":"NGINX Open Source","defaultStatus":"unknown","versions":[{"version":"1.31.0","status":"affected","lessThan":"1.31.7","versionType":"custom"},{"version":"1.30.0","status":"affected","lessThan":"1.30.6","versionType":"custom"},{"version":"1.25.0","status":"affected","lessThan":"*","versionType":"custom"}],"modules":["ngx_http_v3_module"]}],"references":[{"url":"https://my.f5.com/manage/s/article/K000162613","tags":["vendor-advisory"]}],"metrics":[{"cvssV3_1":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":5.3,"baseSeverity":"MEDIUM","confidentialityImpact":"NONE","integrityImpact":"LOW","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N","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:N/VI:L/VA:N/SC:N/SI:N/SA:N","version":"4.0","vulnAvailabilityImpact":"NONE","vulnConfidentialityImpact":"NONE","vulnIntegrityImpact":"LOW","vulnerabilityResponseEffort":"NOT_DEFINED"},"format":"CVSS","scenarios":[{"lang":"en","value":"GENERAL"}]}],"problemTypes":[{"descriptions":[{"cweId":"CWE-172","description":"CWE-172","lang":"en","type":"CWE"}]}],"providerMetadata":{"shortName":"f5","orgId":"9dacffd4-cb11-413f-8451-fbbfd4ddc0ab","dateUpdated":"2026-10-14T14:40:28.955Z"},"credits":[{"lang":"en","type":"finder","value":"F5 acknowledges Hansol Lee (rabbit2747) of GOTROOT for bringing this issue to our attention and following the highest standards of coordinated disclosure."}],"datePublic":"2026-10-14T14:00:00.000Z","impacts":[{"capecId":"CAPEC-272","descriptions":[{"lang":"en","value":"CAPEC-272 Protocol Manipulation"}]}],"source":{"discovery":"EXTERNAL"},"workarounds":[{"lang":"en","supportingMedia":[{"base64":false,"type":"text/html","value":"<span style=\"background-color: rgb(255, 255, 255);\">To mitigate this vulnerability, you can disable the buffered proxy directive (configure proxy_request_buffering off). <br>For more information, refer to the proxy_request_buffering page.</span><br><a target=\"_blank\" rel=\"nofollow\" href=\"https://nginx.org/en/docs/http/ngx_http_proxy_module.html#proxy_request_buffering\">https://nginx.org/en/docs/http/ngx_http_proxy_module.html#proxy_request_buffering</a><br>"}],"value":"To mitigate this vulnerability, you can disable the buffered proxy directive (configure proxy_request_buffering off). \nFor more information, refer to the proxy_request_buffering page.\n https://nginx.org/en/docs/http/ngx_http_proxy_module.html#proxy_request_buffering"}],"x_generator":{"engine":"F5 SIRTBot v1.0"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"id":"CVE-2026-95101","role":"CISA Coordinator","options":[{"Exploitation":"none"},{"Automatable":"yes"},{"Technical Impact":"partial"}],"version":"2.0.3","timestamp":"2026-10-15T15:53:54.831906Z"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-10-15T16:43:46.630Z"}}]}}}