Open redirect in remix-run react-router
Priority LOW 35CWE-601Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Attack requirements
- None
- Impact type
- Spoofing
- Confidentiality · integrity · availability
- None · High · None
- Fix status
- Partial Red Hat: 2 fixed, 50 without a fix
Attack profile from CVSS 4.0 · CNA. Fix status from CNA, GitHub and Red Hat. Impact type from CWE-601.
Summary
React Router is a router for React. In versions 7.0.0 through 7.14.0 and 6.7.0 through 6.30.3, certain URLs passed to the redirect function can trigger an open redirect to an external domain due to path values starting with // being reinterpreted as protocol-relative URLs. The level of impact depends on the validation done by the application prior to returning the redirect. This does not impact applications using Declarative Mode (<BrowserRouter>). This is patched in versions 7.14.1 and 6.30.4.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00221 12th percentileScored 2026-11-07
Fix Partial react-router (remix-run): 7.14.1, 6.30.4@remix-run/router (remix-run): 1.23.3+2 more productsRed Hat: 2 advisoriesRed Hat: 2 fixed, 50 without a fix
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- Yes
- Technical impact
- Partial
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 |
|---|---|---|---|---|---|
| remix-run | react-router | 7.0.0 to before 7.14.1; 6.7.0 to before 6.30.4 | 7.14.1, 6.30.4 | Patch available | CNA |
| remix-run | @remix-run/router | 1.3.0 to before 1.23.3 | 1.23.3 | Patch available | CNA |
| — | react-router (npm) | 7.0.0 to before 7.14.1 | 7.14.1 | Patch available | GHSA-2j2x-hqr9-3h42 |
| — | react-router (npm) | 6.7.0 to before 6.30.4 | 6.30.4 | Patch available | GHSA-2j2x-hqr9-3h42 |
| — | @remix-run/router (npm) | 1.3.0 to before 1.23.3 | 1.23.3 | Patch available | GHSA-2j2x-hqr9-3h42 |
- react-router Vendorremix-run Affected 7.0.0 to before 7.14.1; 6.7.0 to before 6.30.4 Fixed in 7.14.1, 6.30.4 Patch available CNA
- @remix-run/router Vendorremix-run Affected 1.3.0 to before 1.23.3 Fixed in 1.23.3 Patch available CNA
- react-router (npm) Vendor— Affected 7.0.0 to before 7.14.1 Fixed in 7.14.1 Patch available GHSA-2j2x-hqr9-3h42
- react-router (npm) Vendor— Affected 6.7.0 to before 6.30.4 Fixed in 6.30.4 Patch available GHSA-2j2x-hqr9-3h42
- @remix-run/router (npm) Vendor— Affected 1.3.0 to before 1.23.3 Fixed in 1.23.3 Patch available GHSA-2j2x-hqr9-3h42
Remediation
- Fix · CNA react-router (remix-run) Fixed in 7.14.1, 6.30.4
- Fix · CNA @remix-run/router (remix-run) Fixed in 1.23.3
- Fix · GHSA-2j2x-hqr9-3h42 react-router (npm) Fixed in 7.14.1 Advisory →
- Fix · GHSA-2j2x-hqr9-3h42 react-router (npm) Fixed in 6.30.4 Advisory →
- Fix · GHSA-2j2x-hqr9-3h42 @remix-run/router (npm) Fixed in 1.23.3 Advisory →
Red Hat 2 advisories
- RHSA-2026:56928 Released 2026-08-19 · Red Hat rating ImportantRed Hat OpenShift Data Foundation 4.22.2 security, enhancement & bug fix update
- Red Hat Openshift Data Foundation 4.22 registry.redhat.io/odf4/cephcsi-rhel9, registry.redhat.io/odf4/cephcsi-rhel9-operator, registry.redhat.io/odf4/devicefinder-rhel9 +25
- RHSA-2026:56431 Released 2026-08-18 · Red Hat rating ImportantRed 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
Vendor assessments
Red Hat
Red Hat rating: Moderate. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Cryostat 4 | Affected | No fix yet: Fix deferred |
| Exploit Intelligence | Affected | No fix yet: Fix deferred |
| Gatekeeper 3 | Affected | No fix yet: Fix deferred |
| Migration Toolkit for Applications 8 | Affected | No fix yet: Fix deferred |
| Migration Toolkit for Containers | Affected | No fix yet: Fix deferred |
| Migration Toolkit for Virtualization | Affected | No fix yet: Fix deferred |
| Multicluster Engine for Kubernetes | Affected | No fix yet: Fix deferred |
| Network Observability Operator | Affected | No fix yet: Fix deferred |
| Node HealthCheck Operator | Affected | No fix yet: Fix deferred |
| OpenShift Lightspeed | Affected | No fix yet: Fix deferred |
| OpenShift Pipelines | Affected | No fix yet: Fix deferred |
| OpenShift Service Mesh 2 | Affected | No fix yet: Fix deferred |
| OpenShift Service Mesh 3 | Affected | No fix yet: Fix deferred |
| Red Hat AMQ Broker 7 | Affected | No fix yet: Fix deferred |
| Red Hat Advanced Cluster Management for Kubernetes 2 | Affected | No fix yet: Fix deferred |
| Red Hat Advanced Cluster Security 4 | Affected | No fix yet: Fix deferred |
| Red Hat Ansible Automation Platform 2 | Affected | No fix yet: Fix deferred |
| Red Hat Build of Keycloak | Affected | No fix yet: Fix deferred |
| Red Hat Build of Podman Desktop | Affected | No fix yet: Fix deferred |
| Red Hat Ceph Storage 5 | Affected | No fix yet: Fix deferred |
| Red Hat Ceph Storage 9 | Affected | No fix yet: Fix deferred |
| Red Hat Data Grid 8 | Affected | No fix yet: Fix deferred |
| Red Hat Developer Hub 1 | Affected | No fix yet: Fix deferred |
| Red Hat Discovery 2 | Affected | No fix yet: Fix deferred |
| Red Hat Edge Manager 1 | Affected | No fix yet: Fix deferred |
| Red Hat Enterprise Linux 10 | Affected | No fix yet: Fix deferred |
| Red Hat Enterprise Linux 8 | Affected | No fix yet: Fix deferred |
| Red Hat Enterprise Linux 9 | Affected | No fix yet: Fix deferred |
| Red Hat Fuse 7 | Affected | No fix yet: Fix deferred |
| Red Hat JBoss Enterprise Application Platform 8 | Affected | No fix yet: Fix deferred |
| Red Hat JBoss Enterprise Application Platform Expansion Pack | Affected | No fix yet: Fix deferred |
| Red Hat OpenShift AI (RHOAI) | Affected | No fix yet: Fix deferred |
| Red Hat OpenShift Container Platform 4 | Affected | No fix yet: Fix deferred |
| Red Hat OpenShift Container Platform 5 | Affected | No fix yet: Fix deferred |
| Red Hat OpenShift Dev Spaces | Affected | No fix yet: Fix deferred |
| Red Hat OpenShift GitOps | Affected | No fix yet: Fix deferred |
| Red Hat OpenShift Virtualization 4 | Affected | No fix yet: Fix deferred |
| Red Hat OpenShift distributed tracing 3 | Affected | No fix yet: Fix deferred |
| Red Hat Openshift Data Foundation 4 | Affected | No fix yet: Fix deferred |
| Red Hat Process Automation 7 | Affected | No fix yet: Fix deferred |
| Red Hat Quay 3 | Affected | No fix yet: Fix deferred |
| Red Hat Satellite 6 | Affected | No fix yet: Fix deferred |
| Red Hat Single Sign-On 7 | Affected | No fix yet: Fix deferred |
| Red Hat Trusted Artifact Signer | Affected | No fix yet: Fix deferred |
| Red Hat Trusted Profile Analyzer | Affected | No fix yet: Fix deferred |
| Red Hat build of Apache Camel - HawtIO 4 | Affected | No fix yet: Fix deferred |
| Red Hat build of Apache Camel for Spring Boot 4 | Affected | No fix yet: Fix deferred |
| Red Hat build of Apicurio Registry 2 | Affected | No fix yet: Fix deferred |
| Red Hat build of Apicurio Registry 3 | Affected | No fix yet: Fix deferred |
| Self-service automation portal 2 | Affected | No fix yet: Fix deferred |
| Red Hat Openshift Data Foundation 4.18 | Fixed | RHSA-2026:56431 |
| Red Hat Openshift Data Foundation 4.22 | Fixed | RHSA-2026:56928 |
Not affected: 2 products
- Red Hat Openshift Data Foundation 4.18
- Red Hat Openshift Data Foundation 4.22
Timeline
- 2026-10-02 Threatist record created from CVE-2026-40181
- 2026-10-03 Alias added: GHSA-2j2x-hqr9-3h42
- 2026-10-27 Affected versions changed · Red Hat
- 2026-10-30 Affected versions changed · Red Hat
References
More remix-run React-router vulnerabilities
- TI-2026-40200 React Router: Unauthenticated Denial of Service via Inefficient Route Matching CVSS 4.0HIGH 8.7
- TI-2026-30645 React Router vulnerable to DoS via unbounded path expansion in __manifest endpoint CVSS 3.1HIGH 7.5
- TI-2026-26400 React Router vulnerable to Denial of Service via reflected user input in single-fetch CVSS 3.1HIGH 7.5
- TI-2026-17723 React Router vulnerable to XSS via Open Redirects CVSS 3.1HIGH 8.0
- TI-2026-17585 React Router SSR XSS in ScrollRestoration CVSS 3.1HIGH 8.2
- TI-2026-30532 Deserialization of untrusted data in remix-run react-router CVSS 3.1HIGH 8.1
Sources
- CVE-2026-40181 · CVE Program
- CVE-2026-40181 · NVD
- FIRST EPSS
- GHSA-2j2x-hqr9-3h42 · GitHub Advisory Database · CC BY 4.0
- CVE-2026-40181 · 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