CVE-2026-95101

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When using HTTP/3 with \n\n<span style=\"background-color: rgb(255, 255, 255);\">proxy_request_buffering on&nbsp;<span style=\"background-color: rgb(255, 255, 255);\">directive</span></span>,&nbsp;<span style=\"background-color: rgb(255, 255, 255);\">an unauthenticated attacker may be able to inject data in the proxied request.<br><br>Impact<br>\n\n<div><p>This vulnerability may allow remote attackers to \n\ninject data in the proxied request<span style=\"background-color: rgb(255, 255, 255);\">.</span>&nbsp; There is no control plane exposure; this is a data plane issue only.</p></div></span></span>\n\n\nNote: Software versions which have reached End of Technical Support (EoTS) are not evaluated."}], "value": "Description\nNGINX Plus and NGINX Open Source have a vulnerability in the ngx_http_v3_module module. 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When using HTTP/3 with \n\nproxy_request_buffering on\u00a0directive,\u00a0an 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.\u00a0 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.", "supportingMedia": [{"type": "text/html", "value": "<span style=\"background-color: rgb(255, 255, 255);\">Description<br>NGINX Plus and NGINX Open Source have a vulnerability in the </span><strong>ngx_http_v3_module</strong><span style=\"background-color: rgb(255, 255, 255);\"> module. When using HTTP/3 with \n\n<span style=\"background-color: rgb(255, 255, 255);\">proxy_request_buffering on&nbsp;<span style=\"background-color: rgb(255, 255, 255);\">directive</span></span>,&nbsp;<span style=\"background-color: rgb(255, 255, 255);\">an unauthenticated attacker may be able to inject data in the proxied request.<br><br>Impact<br>\n\n<div><p>This vulnerability may allow remote attackers to \n\ninject data in the proxied request<span style=\"background-color: rgb(255, 255, 255);\">.</span>&nbsp; There is no control plane exposure; this is a data plane issue only.</p></div></span></span>\n\n\nNote: Software versions which have reached End of Technical Support (EoTS) are not evaluated.", "base64": false}]}], "problemTypes": [{"descriptions": [{"lang": "en", "type": "CWE", "cweId": "CWE-172", "description": "CWE-172"}]}], "providerMetadata": {"orgId": "9dacffd4-cb11-413f-8451-fbbfd4ddc0ab", "shortName": "f5", "dateUpdated": "2026-10-14T14:40:28.955Z"}}}, "cveMetadata": {"cveId": "CVE-2026-95101", "state": "PUBLISHED", "dateUpdated": "2026-10-15T16:43:46.630Z", "dateReserved": "2026-09-30T17:31:09.137Z", "assignerOrgId": "9dacffd4-cb11-413f-8451-fbbfd4ddc0ab", "datePublished": "2026-10-14T14:40:28.955Z", "assignerShortName": "f5"}, "dataVersion": "5.2"}

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{"bugzilla": {"description": "nginx: nginx: Data injection in proxied requests via HTTP/3 request buffering", "id": "2552355", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2552355"}, "csaw": false, "cvss3": {"cvss3_base_score": "5.3", "cvss3_scoring_vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N", "status": "draft"}, "cwe": "CWE-444", "details": ["Description\nNGINX Plus and NGINX Open Source have a vulnerability in the ngx_http_v3_module module. When using HTTP/3 with \nproxy_request_buffering on\u00a0directive,\u00a0an unauthenticated attacker may be able to inject data in the proxied request.\nImpact\nThis vulnerability may allow remote attackers to \ninject data in the proxied request.\u00a0 There is no control plane exposure; this is a data plane issue only.\nNote: Software versions which have reached End of Technical Support (EoTS) are not evaluated.", "A flaw was found in NGINX. When HTTP/3 is used with proxy request buffering enabled, an unauthenticated remote attacker can inject arbitrary data into proxied requests. This vulnerability allows an attacker to manipulate traffic forwarded to backend servers, compromising data integrity."], "name": "CVE-2026-95101", "package_state": [{"cpe": "cpe:/a:redhat:hummingbird:1", "fix_state": "Affected", "package_name": "nginx", "product_name": "Red Hat Hardened Images"}, {"cpe": "cpe:/a:redhat:hummingbird:1", "fix_state": "Not affected", "package_name": "php", "product_name": "Red Hat Hardened Images"}], "public_date": "2026-10-14T14:40:28Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-95101\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-95101\nhttps://my.f5.com/manage/s/article/K000162613"], "threat_severity": "Moderate"}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[1.31.0,1.31.7)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[1.30.0,1.30.6)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "[1.25.0,*]"}}], "enrichment": {"confidence": 100.0, "confidence_source": "matching", "scores": [{"score": 100.0, "source": "matching"}]}, "original": {"product": "NGINX Open Source", "source": "cna", "vendor": "F5"}, "product": "nginx_open_source", "vendor": "f5"}, {"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "[37.1.0,37.2.0.1)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "[37.0.0,37.0.7.1)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "[R36,*]"}}, {"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "[R35,*]"}}, {"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "[R34,*]"}}, {"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "[R33,*]"}}], "enrichment": {"confidence": 100.0, "confidence_source": "matching", "scores": [{"score": 100.0, "source": "matching"}]}, "original": {"product": "NGINX Plus", "source": "cna", "vendor": "F5"}, "product": "nginx_plus", "vendor": "f5"}], "created": "2026-10-15T01:15:10.447637+00:00", "updated": "2026-10-22T22:00:14.354610+00:00", "vendors": ["f5", "f5$PRODUCT$nginx_open_source", "f5$PRODUCT$nginx_plus"]}