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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:
undici's ProxyAgent silently drops the requestTls option when configured with a SOCKS5 proxy URI (socks5:// or socks://). The target HTTPS connection through the SOCKS5 tunnel falls back to Node's default trust store, ignoring user-configured ca, cert, key, rejectUnauthorized, and servername settings.
Applications that pin to an internal or corporate CA via requestTls.ca will, when their proxy URI is SOCKS5, get the default Mozilla CA bundle as the trust anchor instead. Any cert signed by any publicly-trusted CA for the target hostname is accepted, breaking the intended pin and enabling MITM read and tamper of the HTTPS exchange.
Affected applications are those that use undici's ProxyAgent (or Socks5ProxyAgent directly) with SOCKS5 AND rely on requestTls for TLS scope restriction. The bug was introduced in undici 7.23.0 when SOCKS5 support was added.
Patches:
Upgrade to undici v7.28.0 or v8.5.0.
Workarounds:
No workaround is available within the SOCKS5 path. If a SOCKS5 proxy with TLS scope restriction is required and an upgrade is not yet possible, route the traffic through an HTTP-proxy ProxyAgent instead, where requestTls is honored correctly.
Metrics
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[{"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"]}]
[{"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"]}]
Initial Analysis by NIST6/25/2026 1:42:23 PM
Action
Type
Old Value
New Value
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) 8.5.0
Impact:
undici's ProxyAgent silently drops the requestTls option when configured with a SOCKS5 proxy URI (socks5:// or socks://). The target HTTPS connection through the SOCKS5 tunnel falls back to Node's default trust store, ignoring user-configured ca, cert, key, rejectUnauthorized, and servername settings.
Applications that pin to an internal or corporate CA via requestTls.ca will, when their proxy URI is SOCKS5, get the default Mozilla CA bundle as the trust anchor instead. Any cert signed by any publicly-trusted CA for the target hostname is accepted, breaking the intended pin and enabling MITM read and tamper of the HTTPS exchange.
Affected applications are those that use undici's ProxyAgent (or Socks5ProxyAgent directly) with SOCKS5 AND rely on requestTls for TLS scope restriction. The bug was introduced in undici 7.23.0 when SOCKS5 support was added.
Patches:
Upgrade to undici v7.28.0 or v8.5.0.
Workarounds:
No workaround is available within the SOCKS5 path. If a SOCKS5 proxy with TLS scope restriction is required and an upgrade is not yet possible, route the traffic through an HTTP-proxy ProxyAgent instead, where requestTls is honored correctly.
) or https:// means you've safely connected to the .gov website. Share sensitive information only on official, secure websites.
