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TI-2026-05900 Aliases CVE-2026-6734GHSA-hm92-r4w5-c3mj

undici vulnerable to cross-origin request routing via SOCKS5 proxy pool reuse

Priority MEDIUM 40CWE-346Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
None
Attack complexity
Low
Impact type
Security bypass
Confidentiality · integrity · availability
High · High · High
Fix status
Partial Red Hat: 15 fixed, 3 without a fix

Attack profile from CVSS 3.1 · NVD. Fix status from CNA, GitHub and Red Hat. Impact type from CWE-346.

Summary

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.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00345 28th percentileScored 2026-11-07
Fix Partial undici (undici): 7.26.0, 8.2.0undici (npm): 7.28.0, 8.2.0Red Hat: 21 advisoriesRed Hat: 15 fixed, 3 without a fix

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
NodeJSundici7.23.0 to before 7.26.0; 8.0.0 to before 8.2.07.26.0, 8.2.0Patch availableCNA
—undici (npm)7.23.0 to before 7.28.07.28.0Patch availableGHSA-hm92-r4w5-c3mj
—undici (npm)8.0.0 to before 8.2.08.2.0Patch availableGHSA-hm92-r4w5-c3mj
  • undici VendorNodeJS Affected 7.23.0 to before 7.26.0; 8.0.0 to before 8.2.0 Fixed in 7.26.0, 8.2.0 Patch available CNA
  • undici (npm) Vendor— Affected 7.23.0 to before 7.28.0 Fixed in 7.28.0 Patch available GHSA-hm92-r4w5-c3mj
  • undici (npm) Vendor— Affected 8.0.0 to before 8.2.0 Fixed in 8.2.0 Patch available GHSA-hm92-r4w5-c3mj

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:nodejs:undici:*:*:*:*:*:node.js:*:*7.23.0 to before 7.28.0; 8.0.0 to before 8.2.0VulnerableNodeJS
  • cpe:2.3:a:nodejs:undici:*:*:*:*:*:node.js:*:* Versions 7.23.0 to before 7.28.0; 8.0.0 to before 8.2.0 Vulnerable ·NodeJS

Remediation

  • Fix · CNA undici (undici) Fixed in 7.26.0, 8.2.0
  • Fix · GHSA-hm92-r4w5-c3mj undici (npm) Fixed in 7.28.0 Advisory →
  • Fix · GHSA-hm92-r4w5-c3mj undici (npm) Fixed in 8.2.0 Advisory →

Red Hat 21 advisories

  • RHSA-2026:87410 Released 2026-10-21 · Red Hat rating Critical
    RHOAI 2.25.12 - Red Hat OpenShift AI
    • Red Hat OpenShift AI 2.25 registry.redhat.io/rhoai/odh-built-in-detector-rhel9, registry.redhat.io/rhoai/odh-caikit-nlp-rhel9, registry.redhat.io/rhoai/odh-codeflare-operator-rhel9 +47
  • RHSA-2026:84734 Released 2026-10-19 · Red Hat rating Critical
    RHOAI 3.4.5 - Red Hat OpenShift AI
    • Red Hat OpenShift AI 3.4 registry.redhat.io/rhoai/odh-ai-gateway-payload-processing-rhel9, registry.redhat.io/rhoai/odh-automl-rhel9, registry.redhat.io/rhoai/odh-autorag-rhel9 +47
  • RHSA-2026:73987 Released 2026-09-30 · Red Hat rating Critical
    RHOAI 3.3.7 - Red Hat OpenShift AI
    • Red Hat OpenShift AI 3.3 registry.redhat.io/rhoai/odh-built-in-detector-rhel9, registry.redhat.io/rhoai/odh-dashboard-rhel9, registry.redhat.io/rhoai/odh-data-science-pipelines-argo-argoexec-rhel9 +47
Show 18 more Red Hat advisories
  • RHSA-2026:65126 Released 2026-09-08 · Red Hat rating Important
    RHOAI 2.25.11 - Red Hat OpenShift AI
    • Red Hat OpenShift AI 2.25 registry.redhat.io/rhoai/odh-built-in-detector-rhel9, registry.redhat.io/rhoai/odh-caikit-tgis-serving-rhel9, registry.redhat.io/rhoai/odh-dashboard-rhel9 +47
  • RHSA-2026:60520 Released 2026-08-27 · Red Hat rating Critical
    RHOAI 3.4.4 - Red Hat OpenShift AI
    • Red Hat OpenShift AI 3.4 registry.redhat.io/rhoai/odh-automl-rhel9, registry.redhat.io/rhoai/odh-autorag-rhel9, registry.redhat.io/rhoai/odh-built-in-detector-rhel9 +47
  • RHSA-2026:57013 Released 2026-08-19 · Red Hat rating Important
    Red Hat OpenShift Data Foundation 4.20.17 security, enhancement & bug fix update
    • Red Hat Openshift Data Foundation 4.20 registry.redhat.io/odf4/cephcsi-rhel9, registry.redhat.io/odf4/cephcsi-rhel9-operator, registry.redhat.io/odf4/mcg-core-rhel9 +19
  • RHSA-2026:56431 Released 2026-08-18 · Red Hat rating Important
    Red Hat OpenShift Data Foundation 4.18.27 security, enhancement & bug fix update
    • Red Hat Openshift Data Foundation 4.18 registry.redhat.io/odf4/cephcsi-rhel9, registry.redhat.io/odf4/cephcsi-rhel9-operator, registry.redhat.io/odf4/mcg-core-rhel9 +16
  • RHSA-2026:56366 Released 2026-08-18 · Red Hat rating Important
    Red Hat OpenShift Data Foundation 4.19.22 security, enhancement & bug fix update
    • Red Hat Openshift Data Foundation 4.19 registry.redhat.io/odf4/cephcsi-rhel9, registry.redhat.io/odf4/cephcsi-rhel9-operator, registry.redhat.io/odf4/mcg-core-rhel9 +17
  • RHSA-2026:48151 Released 2026-07-29 · Red Hat rating Important
    Red Hat build of Cryostat security update
    • Cryostat 4 on RHEL 9 cryostat/cryostat-grafana-dashboard-rhel9, cryostat/cryostat-openshift-console-plugin-rhel9, cryostat/cryostat-reports-rhel9 +4
  • RHSA-2026:48124 Released 2026-07-29 · Red Hat rating Important
    Red Hat OpenShift Dev Spaces 3.29.1 Release.
    • Red Hat OpenShift Dev Spaces 3.29 registry.redhat.io/devspaces/code-rhel9, registry.redhat.io/devspaces/dashboard-rhel9, registry.redhat.io/devspaces/jetbrains-ide-rhel9 +2
  • RHSA-2026:41929 Released 2026-07-20 · Red Hat rating Important
    Red Hat Developer Hub 1.9.7 release.
    • Red Hat Developer Hub 1.9 registry.redhat.io/rhdh/rhdh-hub-rhel9, registry.redhat.io/rhdh/rhdh-rhel9-operator
  • RHSA-2026:39868 Released 2026-07-15 · Red Hat rating Important
    nodejs:24 security, bug fix, and enhancement update
    • Red Hat Enterprise Linux AppStream (v. 8) nodejs-1:24.18.0-1.module+el8.10.0+24481+7a71fac8.aarch64::nodejs:24, nodejs-1:24.18.0-1.module+el8.10.0+24481+7a71fac8.ppc64le::nodejs:24, nodejs-1:24.18.0-1.module+el8.10.0+24481+7a71fac8.s390x::nodejs:24 +25
  • RHSA-2026:38236 Released 2026-07-11 · Red Hat rating Important
    Red Hat Hardened Images RPMs Security Update
    • Red Hat Hardened Images nodejs24-1:24.18.0-0.3.hum1@aarch64, nodejs24-1:24.18.0-0.3.hum1@src, nodejs24-1:24.18.0-0.3.hum1@x86_64 +16
  • RHSA-2026:36820 Released 2026-07-08 · Red Hat rating Important
    Red Hat OpenShift Dev Spaces 3.29.0 Release.
    • Red Hat OpenShift Dev Spaces 3.29 registry.redhat.io/devspaces/code-rhel9, registry.redhat.io/devspaces/dashboard-rhel9, registry.redhat.io/devspaces/multicluster-redirector-rhel9 +6
  • RHSA-2026:36754 Released 2026-07-08 · Red Hat rating Important
    Red Hat Developer Hub 1.10.2 release.
    • Red Hat Developer Hub 1.10 registry.redhat.io/rhdh/rhdh-hub-rhel9, registry.redhat.io/rhdh/rhdh-rhel9-operator
  • RHSA-2026:35891 Released 2026-07-06 · Red Hat rating Important
    nodejs:24 security, bug fix, and enhancement update
    • Red Hat Enterprise Linux AppStream (v. 9) nodejs-1:24.18.0-1.module+el9.8.0+24456+b244c3b4.aarch64::nodejs:24, nodejs-1:24.18.0-1.module+el9.8.0+24456+b244c3b4.ppc64le::nodejs:24, nodejs-1:24.18.0-1.module+el9.8.0+24456+b244c3b4.s390x::nodejs:24 +25
  • RHSA-2026:35841 Released 2026-07-06 · Red Hat rating Important
    nodejs24 security, bug fix, and enhancement update
    • Red Hat Enterprise Linux AppStream (v. 10) nodejs24-1:24.18.0-1.el10_2, nodejs24-devel-1:24.18.0-1.el10_2, nodejs24-docs-1:24.18.0-1.el10_2 +3
  • RHSA-2026:34342 Released 2026-07-01 · Red Hat rating Critical
    Cluster Observability Operator 1.5.0
    • Cluster Observability Operator 1.5 registry.redhat.io/cluster-observability-operator/distributed-tracing-console-plugin-pf4-rhel9, registry.redhat.io/cluster-observability-operator/distributed-tracing-console-plugin-pf5-rhel9, registry.redhat.io/cluster-observability-operator/distributed-tracing-console-plugin-pf6-rhel9 +9
  • RHSA-2026:22934 Released 2026-06-03 · Red Hat rating Important
    Red Hat Hardened Images RPMs bug fix and enhancement update
    • Red Hat Hardened Images cargo-1.96.0-1.hum1@aarch64, cargo-1.96.0-1.hum1@x86_64, clippy-1.96.0-1.hum1@aarch64 +32
  • RHSA-2026:22380 Released 2026-06-02 · Red Hat rating Important
    Red Hat Hardened Images RPMs bug fix and enhancement update
    • Red Hat Hardened Images nodejs26-26.3.0-1.2.hum1@aarch64, nodejs26-26.3.0-1.2.hum1@src, nodejs26-26.3.0-1.2.hum1@x86_64 +14
  • RHSA-2026:7378 Released 2026-04-10 · Red Hat rating Important
    Red Hat Hardened Images RPMs bug fix and enhancement update
    • Red Hat Hardened Images nodejs25-25.9.0-1.1.hum1@aarch64, nodejs25-25.9.0-1.1.hum1@src, nodejs25-25.9.0-1.1.hum1@x86_64 +14

Vendor assessments

Red Hat

Red Hat rating: Important. Red Hat's page for this CVE →

ProductStatusPlan or fix
OpenShift PipelinesAffectedNo fix yet
Red Hat Build of Podman DesktopAffectedNo fix yet
Self-service automation portal 2AffectedNo fix yet
Cluster Observability Operator 1.5Fixed RHSA-2026:34342
Cryostat 4 on RHEL 9Fixed RHSA-2026:48151
Red Hat Developer Hub 1.10Fixed RHSA-2026:36754
Red Hat Developer Hub 1.9Fixed RHSA-2026:41929
Red Hat Enterprise Linux AppStream (v. 10)Fixed RHSA-2026:35841
Red Hat Enterprise Linux AppStream (v. 8)Fixed RHSA-2026:39868
Red Hat Enterprise Linux AppStream (v. 9)Fixed RHSA-2026:35891
Red Hat Hardened ImagesFixed RHSA-2026:22380, RHSA-2026:22934, RHSA-2026:38236, RHSA-2026:7378
Red Hat OpenShift AI 2.25Fixed RHSA-2026:65126, RHSA-2026:87410
Red Hat OpenShift AI 3.3Fixed RHSA-2026:73987
Red Hat OpenShift AI 3.4Fixed RHSA-2026:60520, RHSA-2026:84734
Red Hat OpenShift Dev Spaces 3.29Fixed RHSA-2026:36820, RHSA-2026:48124
Red Hat Openshift Data Foundation 4.18Fixed RHSA-2026:56431
Red Hat Openshift Data Foundation 4.19Fixed RHSA-2026:56366
Red Hat Openshift Data Foundation 4.20Fixed RHSA-2026:57013
Not affected: 20 products
  • Cluster Observability Operator 1.5
  • Cryostat 4
  • Cryostat 4 on RHEL 9
  • Red Hat AMQ Broker 7
  • Red Hat Developer Hub 1.10
  • Red Hat Developer Hub 1.9
  • Red Hat Enterprise Linux 10
  • Red Hat Enterprise Linux 8
  • Red Hat Enterprise Linux 9
  • Red Hat Hardened Images
  • Red Hat OpenShift AI (RHOAI)
  • Red Hat OpenShift AI 2.25
  • Red Hat OpenShift AI 3.3
  • Red Hat OpenShift AI 3.4
  • Red Hat OpenShift Container Platform 4
  • Red Hat OpenShift Container Platform 5
  • Red Hat OpenShift Dev Spaces 3.29
  • Red Hat Openshift Data Foundation 4.18
  • Red Hat Openshift Data Foundation 4.19
  • Red Hat Openshift Data Foundation 4.20

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-6734
  2. 2026-10-03 Alias added: GHSA-hm92-r4w5-c3mj
  3. 2026-10-07 Fix available: RHSA-2026:73987 · Red Hat
  4. 2026-10-09 Affected versions changed · Red Hat
  5. 2026-10-20 Fix available: RHSA-2026:84734 · Red Hat
  6. 2026-10-20 Affected versions changed · Red Hat
  7. 2026-10-22 Fix available: RHSA-2026:87410 · Red Hat
  8. 2026-10-23 Affected versions changed · Red Hat
  9. 2026-10-31 Affected versions changed · Red Hat
  10. 2026-11-05 Fix available: Cluster Observability Operator 1.5 · Red Hat

References

Advisory 3

Other 2

  • TI-2026-01215 undici is vulnerable to Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling') CVSS 3.1CRITICAL 9.8
  • TI-2022-16376 `undici.request` vulnerable to SSRF using absolute URL on `pathname` CVSS 3.1CRITICAL 9.8
  • TI-2023-09734 CRLF Injection in Nodejs ‘undici’ via host CVSS 3.1MEDIUM 6.5
  • TI-2022-13193 CRLF injection in request headers CVSS 3.1MEDIUM 6.5
  • TI-2022-16375 CRLF Injection in Nodejs ‘undici’ via Content-Type CVSS 3.1MEDIUM 5.3
  • TI-2022-13194 Uncleared cookies on cross-host/cross-origin redirect in undici CVSS 3.1MEDIUM 6.5
See all 51 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences