undici vulnerable to cross-origin cache poisoning via missing origin isolation in interceptors
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- High
- Impact type
- Security bypass
- Confidentiality · integrity · availability
- High · High · None
- Fix status
- Partial Red Hat: 12 fixed, 11 without a fix
Attack profile from CVSS 3.1 · CNA. Fix status from CNA, GitHub and Red Hat. Impact type from CWE-346.
Summary
undici 8.10.0 omits the destination origin from the cache and request-deduplication keys when the cache or deduplicate interceptor is composed directly onto a Client or Pool. Because the internal cache key falls back to an empty origin string, a cacheable or in-flight response from one upstream origin is returned for a request to a different, trusted origin whenever the method, path, and relevant headers match, which permits cross-origin information disclosure and persistent cache poisoning. The reporter demonstrated a full authentication bypass in which a JWT signed with an attacker-controlled key was accepted as belonging to a trusted issuer, and the trusted origin was never contacted. This is a regression introduced in 8.10.0 and affects undici versions from 8.10.0 up to 8.10.2. Applications using an Agent, which carries the origin in its dispatch options, are not affected. Users should upgrade to undici 8.10.2.
Why it matters now
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
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| NodeJS | undici | 8.10.0 to before 8.10.2 | 8.10.2 | Patch available | CNA |
| — | undici (npm) | 8.10.0 to before 8.10.2 | 8.10.2 | Patch available | GHSA-vp8m-p9jh-q5pm |
- undici VendorNodeJS Affected 8.10.0 to before 8.10.2 Fixed in 8.10.2 Patch available CNA
- undici (npm) Vendor— Affected 8.10.0 to before 8.10.2 Fixed in 8.10.2 Patch available GHSA-vp8m-p9jh-q5pm
Remediation
- Fix · CNA undici (undici) Fixed in 8.10.2
- Fix · GHSA-vp8m-p9jh-q5pm undici (npm) Fixed in 8.10.2 Advisory →
Red Hat 15 advisories
- RHSA-2026:95591 Released 2026-11-05 · Red Hat rating ImportantCluster Observability Operator - 1.5
- Cluster Observability Operator 1.5 registry.redhat.io/cluster-observability-operator/alertmanager-rhel9, registry.redhat.io/cluster-observability-operator/cluster-observability-rhel9-operator, registry.redhat.io/cluster-observability-operator/distributed-tracing-console-plugin-pf4-rhel9 +16
- RHSA-2026:95081 Released 2026-11-04 · Red Hat rating ImportantCluster Observability Operator - 1.5
- Cluster Observability Operator 1.5 registry.redhat.io/cluster-observability-operator/alertmanager-rhel9, registry.redhat.io/cluster-observability-operator/cluster-observability-rhel9-operator, registry.redhat.io/cluster-observability-operator/distributed-tracing-console-plugin-pf4-rhel9 +16
- RHSA-2026:92650 Released 2026-10-29 · Red Hat rating ImportantRed Hat OpenShift Data Foundation 4.19.26 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
Show 12 more Red Hat advisories
- RHSA-2026:90321 Released 2026-10-26 · Red Hat rating CriticalRed Hat OpenShift Dev Spaces 3.31.0 Release.
- Red Hat OpenShift Dev Spaces 3.31 registry.redhat.io/devspaces/code-rhel9, registry.redhat.io/devspaces/dashboard-rhel9, registry.redhat.io/devspaces/jetbrains-ide-rhel9 +8
- RHSA-2026:87410 Released 2026-10-21 · Red Hat rating CriticalRHOAI 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-2026:86891 Released 2026-10-21 · Red Hat rating CriticalRHOAI 3.5.2 - Red Hat OpenShift AI
- Red Hat OpenShift AI 3.5 registry.redhat.io/rhoai/odh-automl-rhel9, registry.redhat.io/rhoai/odh-built-in-detector-rhel9, registry.redhat.io/rhoai/odh-cli-rhel9 +47
- RHSA-2026:84734 Released 2026-10-19 · Red Hat rating CriticalRHOAI 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-2026:80644 Released 2026-10-12 · Red Hat rating CriticalAnsible plug-ins for Red Hat Developer Hub Product Release Update
- Red Hat Ansible Automation Platform 2.2 registry.redhat.io/ansible-automation-platform/automation-portal
- RHSA-2026:80603 Released 2026-10-12 · Red Hat rating CriticalAnsible plug-ins for Red Hat Developer Hub Product Release Update
- Red Hat Ansible Automation Platform 2.1 registry.redhat.io/ansible-automation-platform/automation-portal
- RHSA-2026:74085 Released 2026-09-30 · Red Hat rating Importantnodejs:24 security, bug fix, and enhancement update
- Red Hat Enterprise Linux AppStream (v. 8) nodejs-1:24.21.0-1.module+el8.10.0+24927+ed3d907a.aarch64::nodejs:24, nodejs-1:24.21.0-1.module+el8.10.0+24927+ed3d907a.ppc64le::nodejs:24, nodejs-1:24.21.0-1.module+el8.10.0+24927+ed3d907a.s390x::nodejs:24 +25
- RHSA-2026:73838 Released 2026-09-30 · Red Hat rating Importantnodejs:24 security, bug fix, and enhancement update
- Red Hat Enterprise Linux AppStream (v. 9) nodejs-1:24.21.0-1.module+el9.8.0+24924+cd677006.aarch64::nodejs:24, nodejs-1:24.21.0-1.module+el9.8.0+24924+cd677006.ppc64le::nodejs:24, nodejs-1:24.21.0-1.module+el9.8.0+24924+cd677006.s390x::nodejs:24 +25
- RHSA-2026:73428 Released 2026-09-29 · Red Hat rating Importantnodejs24 security, bug fix, and enhancement update
- Red Hat Enterprise Linux AppStream (v. 10) nodejs24-1:24.21.0-1.el10_2, nodejs24-devel-1:24.21.0-1.el10_2, nodejs24-docs-1:24.21.0-1.el10_2 +3
- RHSA-2026:63782 Released 2026-09-04 · Red Hat rating ImportantRed Hat Hardened Images RPMs Security Update
- Red Hat Hardened Images grafana12.4-12.4.9-0.6.hum1@aarch64, grafana12.4-12.4.9-0.6.hum1@src, grafana12.4-12.4.9-0.6.hum1@x86_64
- RHSA-2026:54438 Released 2026-08-12 · Red Hat rating ImportantRed Hat Hardened Images RPMs bug fix and enhancement update
- Red Hat Hardened Images nodejs24-1:24.18.1-0.2.2.hum1@aarch64, nodejs24-1:24.18.1-0.2.2.hum1@src, nodejs24-1:24.18.1-0.2.2.hum1@x86_64 +14
- RHSA-2026:54389 Released 2026-08-12 · Red Hat rating ImportantRed Hat Hardened Images RPMs Security Update
- Red Hat Hardened Images nodejs26-1:26.7.0-1.5.2.hum1@aarch64, nodejs26-1:26.7.0-1.5.2.hum1@src, nodejs26-1:26.7.0-1.5.2.hum1@x86_64 +16
Vendor assessments
Red Hat
Red Hat rating: Important. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Exploit Intelligence | Affected | No fix yet |
| OpenShift Pipelines | Affected | No fix yet |
| Red Hat AMQ Broker 7 | Affected | No fix yet |
| Red Hat Build of Podman Desktop | Affected | No fix yet |
| Red Hat Enterprise Linux 10 | Affected | No fix yet |
| Red Hat Enterprise Linux 8 | Affected | No fix yet |
| Red Hat Enterprise Linux 9 | Affected | No fix yet |
| Red Hat Hardened Images | Affected | No fix planned: Will not fix |
| Red Hat OpenShift AI (RHOAI) | Affected | No fix yet |
| Red Hat Openshift Data Foundation 4 | Affected | No fix yet |
| Secrets Management Console for Red Hat OpenShift | Affected | No fix planned: Will not fix |
| Cluster Observability Operator 1.5 | Fixed | RHSA-2026:95081, RHSA-2026:95591 |
| Red Hat Ansible Automation Platform 2.1 | Fixed | RHSA-2026:80603 |
| Red Hat Ansible Automation Platform 2.2 | Fixed | RHSA-2026:80644 |
| Red Hat Enterprise Linux AppStream (v. 10) | Fixed | RHSA-2026:73428 |
| Red Hat Enterprise Linux AppStream (v. 8) | Fixed | RHSA-2026:74085 |
| Red Hat Enterprise Linux AppStream (v. 9) | Fixed | RHSA-2026:73838 |
| Red Hat Hardened Images | Fixed | RHSA-2026:54389, RHSA-2026:54438, RHSA-2026:63782 |
| Red Hat OpenShift AI 2.25 | Fixed | RHSA-2026:87410 |
| Red Hat OpenShift AI 3.4 | Fixed | RHSA-2026:84734 |
| Red Hat OpenShift AI 3.5 | Fixed | RHSA-2026:86891 |
| Red Hat OpenShift Dev Spaces 3.31 | Fixed | RHSA-2026:90321 |
| Red Hat Openshift Data Foundation 4.19 | Fixed | RHSA-2026:92650 |
Not affected: 16 products
- Cluster Observability Operator 1.5
- Red Hat AMQ Broker 7
- Red Hat Ansible Automation Platform 2
- Red Hat Developer Hub 1
- Red Hat Enterprise Linux 10
- Red Hat Enterprise Linux 9
- Red Hat Hardened Images
- Red Hat OpenShift AI 2.25
- Red Hat OpenShift AI 3.4
- Red Hat OpenShift AI 3.5
- Red Hat OpenShift Container Platform 4
- Red Hat OpenShift Dev Spaces
- Red Hat OpenShift Dev Spaces 3.31
- Red Hat Openshift Data Foundation 4.19
- Red Hat Trusted Artifact Signer
- Self-service automation portal 2
Timeline
- 2026-10-02 Threatist record created from CVE-2026-85152
- 2026-10-03 Alias added: GHSA-vp8m-p9jh-q5pm
- 2026-10-08 Affected versions changed · Red Hat
- 2026-10-13 Fix available: RHSA-2026:80603 · Red Hat
- 2026-10-13 Fix available: RHSA-2026:80644 · Red Hat
- 2026-10-13 Fix available: Red Hat Ansible Automation Platform 2.1, Red Hat Ansible Automation Platform 2.2 · Red Hat
- 2026-10-20 Fix available: RHSA-2026:84734 · Red Hat
- 2026-10-20 Fix available: Red Hat OpenShift AI 3.4 · Red Hat
- 2026-10-22 Fix available: RHSA-2026:86891 · Red Hat
- 2026-10-22 Fix available: RHSA-2026:87410 · Red Hat
- 2026-10-23 Fix available: Red Hat OpenShift AI 2.25, Red Hat OpenShift AI 3.5 · Red Hat
- 2026-10-27 Affected versions changed · Red Hat
- 2026-10-29 Fix available: Red Hat OpenShift Dev Spaces 3.31 · Red Hat
- 2026-10-30 Fix available: RHSA-2026:90321 · Red Hat
- 2026-10-30 Fix available: Red Hat Openshift Data Foundation 4.19 · Red Hat
- 2026-10-31 Fix available: RHSA-2026:92650 · Red Hat
- 2026-11-04 Fix available: RHSA-2026:95081 · Red Hat
- 2026-11-04 Fix available: Cluster Observability Operator 1.5 · Red Hat
- 2026-11-06 Affected versions changed · Red Hat
- 2026-11-06 Fix available: RHSA-2026:95591 · Red Hat
References
Advisory 3
More NodeJS Undici vulnerabilities
- 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
Sources
- CVE-2026-85152 · CVE Program
- CVE-2026-85152 · NVD
- FIRST EPSS
- GHSA-vp8m-p9jh-q5pm · GitHub Advisory Database · CC BY 4.0
- CVE-2026-85152 · Red Hat security data · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences