{"id":"EUVD-2026-95428","revision":"f9b21a616df146babf4d0c0fc137d70a","records":[{"revision":"f9b21a616df146babf4d0c0fc137d70a","observedAt":"2026-11-08T01:59:18.472+00:00","statement":{"source":"euvd","id":"EUVD-2026-95428","aliases":["CVE-2026-94439","GHSA-2gfw-j3c5-j46w"],"title":"When an HTTP server handler sends a 2xx response to an HTTP/1 CONNECT request and returns without hijacking the connection, the server improperly continues to read and serve requests from the connection. Since a 2xx response to an HTTP/1 CO…","description":"When an HTTP server handler sends a 2xx response to an HTTP/1 CONNECT request and returns without hijacking the connection, the server improperly continues to read and serve requests from the connection. Since a 2xx response to an HTTP/1 CONNECT converts the connection into a tunnel, the server should not treat the connection as continuing to contain HTTP. The impact of this misbehavior is mostly limited to potential request smuggling, where an intermediate proxy considers the data on the connection to be tunneled and the server considers it to be HTTP.","state":0,"publishedAt":null,"modifiedAt":null,"affected":[],"metrics":[{"system":"EUVD CVSS 3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","score":7.5,"severity":null}],"references":["https://go.dev/cl/847311","https://go.dev/issue/81744","https://groups.google.com/g/golang-announce/c/U2fTuyDJznI","https://pkg.go.dev/vuln/GO-2026-6613"],"sourceUrl":"https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-95428","license":"ENISA EUVD · source terms and attribution apply","enrichment":{"sourceStatus":null,"weaknesses":[],"productCriteria":[],"sourceDates":{"datePublished":"Oct 8, 2026, 10:53:59 PM","dateUpdated":"Oct 9, 2026, 4:52:15 PM"},"relatedAdvisories":[{"id":"msrc_CVE-2026-94439","title":"HTTP/1 server connection desynchronization after 2xx CONNECT response in net/http","vulnerabilityIds":["CVE-2026-94439"]},{"id":"openSUSE-SU-2026:12101-1","title":"go1.27-1.27.2-1.1 on GA media","vulnerabilityIds":["CVE-2026-56857","CVE-2026-56866","CVE-2026-78659","CVE-2026-78660","CVE-2026-78663","CVE-2026-78667","CVE-2026-78669","CVE-2026-94439","CVE-2026-94440","CVE-2026-94444","CVE-2026-94447","CVE-2026-94448","CVE-2026-97030","CVE-2026-97031","CVE-2026-97032"]},{"id":"RHSA-2026:86093","title":"Red Hat Security Advisory: golang security, bug fix, and enhancement update","vulnerabilityIds":["CVE-2026-56866","CVE-2026-78659","CVE-2026-78660","CVE-2026-78663","CVE-2026-78667","CVE-2026-78669","CVE-2026-94439","CVE-2026-94440","CVE-2026-94444","CVE-2026-94447","CVE-2026-94448","CVE-2026-97030","CVE-2026-97031","CVE-2026-97032","CVE-2026-111943"]},{"id":"RHSA-2026:87245","title":"Red Hat Security Advisory: go-toolset:rhel8 security, bug fix, and enhancement update","vulnerabilityIds":["CVE-2024-45336","CVE-2025-4673","CVE-2025-22866","CVE-2025-22874","CVE-2025-68121","CVE-2026-27137","CVE-2026-27143","CVE-2026-27144","CVE-2026-27145","CVE-2026-32280","CVE-2026-32281","CVE-2026-32282","CVE-2026-32283","CVE-2026-33810","CVE-2026-33811","CVE-2026-33814","CVE-2026-33818","CVE-2026-39820","CVE-2026-39821","CVE-2026-42499","CVE-2026-42504","CVE-2026-56853","CVE-2026-56858","CVE-2026-56859","CVE-2026-56860","CVE-2026-56862","CVE-2026-56866","CVE-2026-78659","CVE-2026-78660","CVE-2026-78663","CVE-2026-78667","CVE-2026-78669","CVE-2026-94439","CVE-2026-94440","CVE-2026-94444","CVE-2026-94447","CVE-2026-94448","CVE-2026-97030","CVE-2026-97031","CVE-2026-97032","CVE-2026-111943"]},{"id":"RHSA-2026:87042","title":"Red Hat Security Advisory: golang security, bug fix, and enhancement update","vulnerabilityIds":["CVE-2026-56866","CVE-2026-78659","CVE-2026-78660","CVE-2026-78663","CVE-2026-78667","CVE-2026-78669","CVE-2026-94439","CVE-2026-94440","CVE-2026-94444","CVE-2026-94447","CVE-2026-94448","CVE-2026-97030","CVE-2026-97031","CVE-2026-97032","CVE-2026-111943"]},{"id":"openSUSE-SU-2026:12093-1","title":"go1.26-1.26.9-1.1 on GA media","vulnerabilityIds":["CVE-2026-56857","CVE-2026-56866","CVE-2026-78659","CVE-2026-78660","CVE-2026-78667","CVE-2026-94439","CVE-2026-94440","CVE-2026-94444","CVE-2026-94447","CVE-2026-94448","CVE-2026-97030","CVE-2026-97031","CVE-2026-97032"]},{"id":"RHSA-2026:86196","title":"Red Hat Security Advisory: golang security, bug fix, and enhancement 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Schwachstellen","vulnerabilityIds":["CVE-2026-56857","CVE-2026-56866","CVE-2026-78659","CVE-2026-78660","CVE-2026-78663","CVE-2026-78667","CVE-2026-78669","CVE-2026-94439","CVE-2026-94440","CVE-2026-94444","CVE-2026-94447","CVE-2026-94448","CVE-2026-97030","CVE-2026-97031","CVE-2026-97032"]},{"id":"RHSA-2026:87246","title":"Red Hat Security Advisory: go-toolset:rhel8 security, bug fix, and enhancement 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update","vulnerabilityIds":["CVE-2026-56866","CVE-2026-78659","CVE-2026-78660","CVE-2026-78663","CVE-2026-78667","CVE-2026-78669","CVE-2026-94439","CVE-2026-94440","CVE-2026-94444","CVE-2026-94447","CVE-2026-94448","CVE-2026-97030","CVE-2026-97031","CVE-2026-97032","CVE-2026-111943"]},{"id":"RHSA-2026:90994","title":"Red Hat Security Advisory: go-toolset:rhel8 security, bug fix, and enhancement 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update","vulnerabilityIds":["CVE-2026-56866","CVE-2026-78659","CVE-2026-78660","CVE-2026-78663","CVE-2026-78667","CVE-2026-78669","CVE-2026-94439","CVE-2026-94440","CVE-2026-94444","CVE-2026-94447","CVE-2026-94448","CVE-2026-97030","CVE-2026-97031","CVE-2026-97032","CVE-2026-111943"]},{"id":"SUSE-SU-2026:24237-1","title":"Security update for go1.27","vulnerabilityIds":["CVE-2026-56857","CVE-2026-56866","CVE-2026-78659","CVE-2026-78660","CVE-2026-78663","CVE-2026-78667","CVE-2026-78669","CVE-2026-94439","CVE-2026-94440","CVE-2026-94444","CVE-2026-94447","CVE-2026-94448","CVE-2026-97030","CVE-2026-97031","CVE-2026-97032"]},{"id":"RHSA-2026:92497","title":"Red Hat Security Advisory: Red Hat OpenShift Service Mesh 3.2.11","vulnerabilityIds":["CVE-2026-56857","CVE-2026-56866","CVE-2026-78663","CVE-2026-78667","CVE-2026-78669","CVE-2026-94439","CVE-2026-94440","CVE-2026-94448","CVE-2026-97030","CVE-2026-97031","CVE-2026-97032","CVE-2026-111943"]},{"id":"RHSA-2026:87040","title":"Red Hat Security Advisory: golang security, bug fix, and enhancement update","vulnerabilityIds":["CVE-2026-56866","CVE-2026-78659","CVE-2026-78660","CVE-2026-78663","CVE-2026-78667","CVE-2026-78669","CVE-2026-94439","CVE-2026-94440","CVE-2026-94444","CVE-2026-94447","CVE-2026-94448","CVE-2026-97030","CVE-2026-97031","CVE-2026-97032","CVE-2026-111943"]},{"id":"RHSA-2026:92451","title":"Red Hat Security Advisory: Red Hat OpenShift Service Mesh 3.0.17","vulnerabilityIds":["CVE-2026-56857","CVE-2026-56866","CVE-2026-78663","CVE-2026-78667","CVE-2026-78669","CVE-2026-94439","CVE-2026-94440","CVE-2026-94448","CVE-2026-97030","CVE-2026-97031","CVE-2026-97032","CVE-2026-111943"]},{"id":"openSUSE-SU-2026:22093-1","title":"Security update for go1.27","vulnerabilityIds":["CVE-2026-56857","CVE-2026-56866","CVE-2026-78659","CVE-2026-78660","CVE-2026-78663","CVE-2026-78667","CVE-2026-78669","CVE-2026-94439","CVE-2026-94440","CVE-2026-94444","CVE-2026-94447","CVE-2026-94448","CVE-2026-97030","CVE-2026-97031","CVE-2026-97032"]},{"id":"RHSA-2026:92480","title":"Red Hat Security Advisory: Red Hat OpenShift Service Mesh 3.1.14","vulnerabilityIds":["CVE-2026-56857","CVE-2026-56866","CVE-2026-78663","CVE-2026-78667","CVE-2026-78669","CVE-2026-94439","CVE-2026-94440","CVE-2026-94448","CVE-2026-97030","CVE-2026-97031","CVE-2026-97032","CVE-2026-111943"]},{"id":"RHSA-2026:87041","title":"Red Hat Security Advisory: golang security, bug fix, and enhancement update","vulnerabilityIds":["CVE-2026-56866","CVE-2026-78659","CVE-2026-78660","CVE-2026-78663","CVE-2026-78667","CVE-2026-78669","CVE-2026-94439","CVE-2026-94440","CVE-2026-94444","CVE-2026-94447","CVE-2026-94448","CVE-2026-97030","CVE-2026-97031","CVE-2026-97032","CVE-2026-111943"]},{"id":"RHSA-2026:92509","title":"Red Hat Security Advisory: Red Hat OpenShift Service Mesh 3.3.9","vulnerabilityIds":["CVE-2026-56857","CVE-2026-56866","CVE-2026-78663","CVE-2026-78667","CVE-2026-78669","CVE-2026-94439","CVE-2026-94440","CVE-2026-94448","CVE-2026-97030","CVE-2026-97031","CVE-2026-97032","CVE-2026-111943"]},{"id":"openSUSE-SU-2026:22095-1","title":"Security update for go1.26","vulnerabilityIds":["CVE-2026-56857","CVE-2026-56866","CVE-2026-78659","CVE-2026-78660","CVE-2026-78667","CVE-2026-94439","CVE-2026-94440","CVE-2026-94444","CVE-2026-94447","CVE-2026-94448","CVE-2026-97030","CVE-2026-97031","CVE-2026-97032"]},{"id":"openSUSE-SU-2026:12112-1","title":"rclone-1.75.2-1.1 on GA media","vulnerabilityIds":["CVE-2026-56857","CVE-2026-56866","CVE-2026-78659","CVE-2026-78660","CVE-2026-78663","CVE-2026-78667","CVE-2026-78669","CVE-2026-84445","CVE-2026-94439","CVE-2026-94440","CVE-2026-94444","CVE-2026-94447","CVE-2026-94448","CVE-2026-97030","CVE-2026-97031","CVE-2026-97032"]}],"note":"EUVD source date text has no stated timezone and is retained without inventing a UTC instant. Related bulletin membership is not an alias, common cause or applicability claim. A missing vector with a zero score is treated as unrated. Complete vendor/product and underlying source evidence remains in the original JSON."},"key":"euvd:EUVD-2026-95428","identifiers":["EUVD-2026-95428","CVE-2026-94439","GHSA-2gfw-j3c5-j46w"]},"retained":false,"historicalAffected":[]}],"coverage":[]}