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This CVE record has been updated after NVD enrichment efforts were completed. Enrichment data supplied by the NVD may require amendment due to these changes.
Description
Impact:
When using Socks5ProxyAgent, undici reuses a single connection pool across different origins without verifying that the pool's 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.
Metrics
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CVE Modified by redhat-SADP7/06/2026 9:17:09 AM
Action
Type
Old Value
New Value
Added
Reference
https://access.redhat.com/errata/RHSA-2026:35841
Changed
Affected
[{"vendor":"Red Hat","product":"Cluster Observability Operator 1.5.0","defaultStatus":"affected","cpes":["cpe:/a:redhat:cluster_observability_operator:1.5::el9"]},{"vendor":"Red Hat","product":"Red Hat Hardened Images","defaultStatus":"affected","cpes":["cpe:/a:redhat:hummingbird:1"]},{"vendor":"Red Hat","product":"Cryostat 4","defaultStatus":"affected","cpes":["cpe:/a:redhat:cryostat:4"]},{"vendor":"Red Hat","product":"OpenShift Pipelines","defaultStatus":"affected","cpes":["cpe:/a:redhat:openshift_pipelines:1"]},{"vendor":"Red Hat","product":"Red Hat Build of Podman Desktop","defaultStatus":"affected","cpes":["cpe:/a:redhat:podman_desktop:1"]},{"vendor":"Red Hat","product":"Red Hat Developer Hub","defaultStatus":"affected","cpes":["cpe:/a:redhat:rhdh:1"]},{"vendor":"Red Hat","product":"Red Hat Enterprise Linux 10","defaultStatus":"affected","cpes":["cpe:/o:redhat:enterprise_linux:10"]},{"vendor":"Red Hat","product":"Red Hat Enterprise Linux 8","defaultStatus":"affected","cpes":["cpe:/o:redhat:enterprise_linux:8"]},{"vendor":"Red Hat","product":"Red Hat Enterprise Linux 9","defaultStatus":"affected","cpes":["cpe:/o:redhat:enterprise_linux:9"]},{"vendor":"Red Hat","product":"Red Hat OpenShift AI (RHOAI)","defaultStatus":"affected","cpes":["cpe:/a:redhat:openshift_ai"]},{"vendor":"Red Hat","product":"Red Hat OpenShift Container Platform 4","defaultStatus":"affected","cpes":["cpe:/a:redhat:openshift:4"]},{"vendor":"Red Hat","product":"Red Hat Openshift Data Foundation 4","defaultStatus":"affected","cpes":["cpe:/a:redhat:openshift_data_foundation:4"]},{"vendor":"Red Hat","product":"Red Hat OpenShift Dev Spaces","defaultStatus":"affected","cpes":["cpe:/a:redhat:openshift_devspaces:3"]},{"vendor":"Red Hat","product":"Self-service automation portal 2","defaultStatus":"affected","cpes":["cpe:/a:redhat:ansible_portal:2"]},{"vendor":"Red Hat","product":"Red Hat AMQ Broker 7","defaultStatus":"unaffected","cpes":["cpe:/a:redhat:amq_broker:7"]}]
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CVE Modified by redhat-SADP7/02/2026 8:17:44 AM
Action
Type
Old Value
New Value
Added
Reference
https://access.redhat.com/errata/RHSA-2026:34342
Changed
Affected
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Initial Analysis by NIST6/27/2026 7:49:02 PM
Action
Type
Old Value
New Value
Added
CVSS V3.1
AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Added
CPE Configuration
OR
*cpe:2.3:a:nodejs:undici:*:*:*:*:*:node.js:*:* versions from (including) 7.23.0 up to (excluding) 7.28.0
*cpe:2.3:a:nodejs:undici:*:*:*:*:*:node.js:*:* versions from (including) 8.0.0 up to (excluding) 8.2.0
Impact:
When using Socks5ProxyAgent, undici reuses a single connection pool across different origins without verifying that the pool's 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.
) or https:// means you've safely connected to the .gov website. Share sensitive information only on official, secure websites.
