React Router vulnerable to Denial of Service via reflected user input in single-fetch
Priority LOW 39CWE-770Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Denial of service
- Confidentiality · integrity · availability
- None · None · High
- Fix status
- Partial Red Hat: 1 fixed, 45 without a fix
Attack profile from CVSS 3.1 · CNA. Fix status from CNA, GitHub and Red Hat. Impact type from CWE-770.
Summary
React Router is a router for React. In versions 7.7.0 through 7.13.1, when using React Router's unstable React Server Components (RSC) APIs, there is a potential client-side Cross-Site Scripting (XSS) vulnerability in the RSC redirect handling if redirects come from untrusted sources. This does not impact applications that are not using the unstable RSC APIs in React Router. This is patched in version 7.13.2.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00294 22nd percentileScored 2026-11-07
Fix Partial react-router (remix-run): 7.14.0turbo-stream (remix-run): 3.0.0+2 more productsRed Hat: 1 advisoryRed Hat: 1 fixed, 45 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 7.14.0 | 7.14.0 | Patch available | CNA |
| remix-run | turbo-stream | before 3.0.0 | 3.0.0 | Patch available | CNA |
| — | react-router (npm) | 7.0.0 to before 7.14.0 | 7.14.0 | Patch available | GHSA-rxv8-25v2-qmq8 |
| — | turbo-stream (npm) | before 3.0.0 | 3.0.0 | Patch available | GHSA-rxv8-25v2-qmq8 |
- react-router Vendorremix-run Affected 7.0.0 to before 7.14.0 Fixed in 7.14.0 Patch available CNA
- turbo-stream Vendorremix-run Affected before 3.0.0 Fixed in 3.0.0 Patch available CNA
- react-router (npm) Vendor— Affected 7.0.0 to before 7.14.0 Fixed in 7.14.0 Patch available GHSA-rxv8-25v2-qmq8
- turbo-stream (npm) Vendor— Affected before 3.0.0 Fixed in 3.0.0 Patch available GHSA-rxv8-25v2-qmq8
CPE configurations NVD · 2
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:shopify:react-router:*:*:*:*:*:node.js:*:* | 7.0.0 to before 7.14.0 | Vulnerable | remix-run |
| cpe:2.3:a:turbo-stream:turbo_stream:*:*:*:*:*:node.js:*:* | before 3.0.0 | Vulnerable | Turbo-stream |
- cpe:2.3:a:shopify:react-router:*:*:*:*:*:node.js:*:* Versions 7.0.0 to before 7.14.0 Vulnerable ·remix-run
- cpe:2.3:a:turbo-stream:turbo_stream:*:*:*:*:*:node.js:*:* Versions before 3.0.0 Vulnerable ·Turbo-stream
Remediation
- Fix · CNA react-router (remix-run) Fixed in 7.14.0
- Fix · CNA turbo-stream (remix-run) Fixed in 3.0.0
- Fix · GHSA-rxv8-25v2-qmq8 react-router (npm) Fixed in 7.14.0 Advisory →
- Fix · GHSA-rxv8-25v2-qmq8 turbo-stream (npm) Fixed in 3.0.0 Advisory →
Red Hat 1 advisory
- RHSA-2026:41951 Released 2026-07-20 · Red Hat rating ImportantRed Hat Data Grid 8.6.2 security update
- Red Hat Data Grid 8.6.2
Vendor assessments
Red Hat
Red Hat rating: Moderate. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Exploit Intelligence | Affected | No fix yet: Fix deferred |
| Gatekeeper 3 | Affected | — |
| 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 | — |
| 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 Advanced Cluster Management for Kubernetes 2 | Affected | — |
| Red Hat Advanced Cluster Security 4 | Affected | No fix yet: Fix deferred |
| Red Hat Ansible Automation Platform 2 | Affected | — |
| Red Hat Build of Keycloak | Affected | No fix planned: Out of support scope |
| Red Hat Build of Podman Desktop | Affected | — |
| Red Hat Ceph Storage 5 | Affected | No fix yet: Fix deferred |
| Red Hat Ceph Storage 9 | Affected | No fix yet: Fix deferred |
| Red Hat Developer Hub 1 | Affected | No fix yet: Fix deferred |
| Red Hat Discovery 2 | Affected | — |
| Red Hat Edge Manager 1 | Affected | — |
| Red Hat Enterprise Linux 10 | Affected | — |
| Red Hat Enterprise Linux 8 | Affected | — |
| Red Hat Enterprise Linux 9 | Affected | — |
| Red Hat Fuse 7 | Affected | No fix planned: Out of support scope |
| Red Hat JBoss Enterprise Application Platform Expansion Pack | Affected | No fix planned: Out of support scope |
| Red Hat OpenShift AI (RHOAI) | Affected | — |
| 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 planned: Out of support scope |
| Red Hat Quay 3 | Affected | No fix yet: Fix deferred |
| Red Hat Satellite 6 | Affected | — |
| Red Hat Single Sign-On 7 | Affected | No fix planned: Out of support scope |
| 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 |
| Red Hat build of Apicurio Registry 2 | Affected | No fix planned: Out of support scope |
| Red Hat build of Apicurio Registry 3 | Affected | No fix planned: Out of support scope |
| Self-service automation portal 2 | Affected | — |
| Red Hat Data Grid 8.6.2 | Fixed | RHSA-2026:41951 |
Not affected: 5 products
- Cryostat 4
- Red Hat AMQ Broker 7
- Red Hat JBoss Enterprise Application Platform 8
- Red Hat OpenShift AI (RHOAI)
- Red Hat build of Apache Camel for Spring Boot 4
Timeline
- 2026-10-02 Threatist record created from CVE-2026-34077
- 2026-10-03 Alias added: GHSA-rxv8-25v2-qmq8
- 2026-10-27 Affected versions changed · Red Hat
- 2026-10-30 Affected versions changed · Red Hat
References
Advisory 2
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-2026-17723 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
- TI-2026-28995 Open redirect in remix-run react-router CVSS 4.0MEDIUM 6.6
Sources
- CVE-2026-34077 · CVE Program
- CVE-2026-34077 · NVD
- FIRST EPSS
- GHSA-rxv8-25v2-qmq8 · GitHub Advisory Database · CC BY 4.0
- CVE-2026-34077 · 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