Vulnerabilities
Misconfiguration
Compliance
CVE Vulnerabilities

CVE-2026-6734

Origin Validation Error

Published: Jun 17, 2026 | Modified: Jul 16, 2026
CVSS 3.x
8.8
HIGH
Source:
NVD
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CVSS 2.x
RedHat/V2
RedHat/V3
7.5 IMPORTANT
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
Ubuntu
MEDIUM
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Additional information
NVDhttps://nvd.nist.gov/vuln/detail/CVE-2026-6734
CWEhttps://cwe.mitre.org/data/definitions/346.html

Impact: When using Socks5ProxyAgent, undici reuses a single connection pool across different origins without verifying that the pools origin matches the requested origin. All requests are dispatched through the pool connected to the first origin, regardless of the intended destination.

This causes cross-origin request routing: credentials and request data intended for origin B are sent to origin A, responses from the wrong origin are trusted, and HTTPS requests may be silently downgraded to HTTP.

Impacted users are applications that use Socks5ProxyAgent (directly or via setGlobalDispatcher) and make requests to more than one origin.

This was introduced in undici 7.23.0 via PR #4385 and affects all versions through 8.1.0.

Patches: Upgrade to undici v7.26.0 or v8.2.0.

Workarounds: Use a separate Socks5ProxyAgent instance per origin, or avoid using Socks5ProxyAgent with multiple origins.

Weakness

The product does not properly verify that the source of data or communication is valid.

Affected Software

NameVendorStart VersionEnd Version
UndiciNodejs7.23.0 (including)7.28.0 (excluding)
UndiciNodejs8.0.0 (including)8.2.0 (excluding)
Red Hat Enterprise Linux 10RedHatnodejs24-1:24.18.0-1.el10_2*
Red Hat Enterprise Linux 8RedHatnodejs:24-8100020260630152626.6d880403*
Red Hat Enterprise Linux 9RedHatnodejs:24-9080020260626074955.rhel9*
Cluster Observability Operator 1.5.0RedHatcluster-observability-operator/distributed-tracing-console-plugin-pf4-rhel9:1782840519*
Cluster Observability Operator 1.5.0RedHatcluster-observability-operator/distributed-tracing-console-plugin-pf5-rhel9:1782839981*
Cluster Observability Operator 1.5.0RedHatcluster-observability-operator/distributed-tracing-console-plugin-pf6-rhel9:1782839193*
Cluster Observability Operator 1.5.0RedHatcluster-observability-operator/distributed-tracing-console-plugin-rhel9:1782838753*
Cluster Observability Operator 1.5.0RedHatcluster-observability-operator/logging-console-plugin-rhel9:1782841925*
Cluster Observability Operator 1.5.0RedHatcluster-observability-operator/monitoring-console-plugin-pf5-rhel9:1782844225*
Cluster Observability Operator 1.5.0RedHatcluster-observability-operator/monitoring-console-plugin-pf6-rhel9:1782839658*
Cluster Observability Operator 1.5.0RedHatcluster-observability-operator/monitoring-console-plugin-rhel9:1782838476*
Cluster Observability Operator 1.5.0RedHatcluster-observability-operator/troubleshooting-panel-console-plugin-rhel9:1782839494*
Red Hat Developer Hub 1.10RedHatrhdh/rhdh-hub-rhel9:1783448184*
Red Hat Hardened ImagesRedHatnodejs26-main-26.3.0-1.2.hum1*
Red Hat Hardened ImagesRedHatrust-main-1.96.0-1.hum1*
Red Hat Hardened ImagesRedHatnodejs24-main-24.18.0-0.3.hum1*
Red Hat Hardened ImagesRedHatnodejs25-main-25.9.0-1.1.hum1*
Red Hat OpenShift Dev Spaces 3.29RedHatdevspaces/dashboard-rhel9:1782498792*
Red Hat OpenShift Dev Spaces 3.29RedHatdevspaces/openvsx-rhel9:1783007534*
Red Hat OpenShift Dev Spaces 3.29RedHatdevspaces/pluginregistry-rhel9:1782989367*
Node-undiciUbuntuquesting*

References

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