EUVD-2026-95428Published

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…

Exact source revision recorded 6 Nov 2026 00:47:03 UTC. It does not establish the source's current position. Latest evidence.

Recorded JSON

euvd · EUVD-2026-95428

Published

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.

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.

Original publisher date fields

datePublished: Oct 8, 2026, 10:53:59 PM

dateUpdated: Oct 9, 2026, 4:52:15 PM

24 related source bulletins · separate from aliases

msrc_CVE-2026-94439: HTTP/1 server connection desynchronization after 2xx CONNECT response in net/http

CVE-2026-94439

openSUSE-SU-2026:12101-1: go1.27-1.27.2-1.1 on GA media

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

RHSA-2026:86093: Red Hat Security Advisory: golang security, bug fix, and enhancement update

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

RHSA-2026:87245: Red Hat Security Advisory: go-toolset:rhel8 security, bug fix, and enhancement update

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

RHSA-2026:87042: Red Hat Security Advisory: golang security, bug fix, and enhancement update

openSUSE-SU-2026:12093-1: go1.26-1.26.9-1.1 on GA media

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

RHSA-2026:86196: Red Hat Security Advisory: golang security, bug fix, and enhancement update

RHSA-2026:92516: Red Hat Security Advisory: Red Hat OpenShift Service Mesh 3.4.4

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

SUSE-SU-2026:24239-1: Security update for go1.26

WID-SEC-W-2026-3841: Golang Go: Mehrere Schwachstellen

RHSA-2026:87246: Red Hat Security Advisory: go-toolset:rhel8 security, bug fix, and enhancement update

RHSA-2026:87043: Red Hat Security Advisory: golang security, bug fix, and enhancement update

RHSA-2026:90994: Red Hat Security Advisory: go-toolset:rhel8 security, bug fix, and enhancement update

CVE-2024-45336 · 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

RHSA-2026:86203: Red Hat Security Advisory: go-toolset:rhel8 security, bug fix, and enhancement update

SUSE-SU-2026:24237-1: Security update for go1.27

RHSA-2026:92497: Red Hat Security Advisory: Red Hat OpenShift Service Mesh 3.2.11

RHSA-2026:87040: Red Hat Security Advisory: golang security, bug fix, and enhancement update

RHSA-2026:92451: Red Hat Security Advisory: Red Hat OpenShift Service Mesh 3.0.17

openSUSE-SU-2026:22093-1: Security update for go1.27

RHSA-2026:92480: Red Hat Security Advisory: Red Hat OpenShift Service Mesh 3.1.14

RHSA-2026:87041: Red Hat Security Advisory: golang security, bug fix, and enhancement update

RHSA-2026:92509: Red Hat Security Advisory: Red Hat OpenShift Service Mesh 3.3.9

openSUSE-SU-2026:22095-1: Security update for go1.26

openSUSE-SU-2026:12112-1: rclone-1.75.2-1.1 on GA media

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

Source published: Oct 8, 2026, 10:53:59 PM (timezone not stated)
Source modified: Oct 9, 2026, 4:52:15 PM (timezone not stated)
Observed here: 6 Nov 2026 00:47:03 UTC
Source terms: ENISA EUVD · source terms and attribution apply

Original source record · Cite this exact observation · Complete original publisher JSON

This view projects the publisher's source fields for reading; the original JSON retains additional fields and CVE enrichment containers. Attribution: euvd · ENISA EUVD · source terms and attribution apply. Source text is retained; field grouping and change labels are provided by ChangeIntel.

EUVD CVSS 3.1 · 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N