Low [CVE-2026-53663] @remix-run/server-runtime: React Router: Insufficient CSRF protection allows integrity impact
This low-severity Red Hat Linux advisory covers CVE-2026-53663 affecting Exploit Intelligence, Network Observability Operator, OpenShift Pipelines.
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Summary
React Router is a router for React. This is a low severity vulnerability because modern browser protections (CORS preflight, SameSite cookies) already block the cross-origin attack vectors that this missing CSRF check would otherwise gate.
This vulnerability is fixed in 7.15.1. Insufficient Cross-Site Request Forgery (CSRF) checks in the framework mode allow a remote attacker to bypass these protections on PUT, PATCH, and DELETE requests.
This could lead to a low integrity impact, where an attacker might be able to perform unintended actions on behalf of a user. Modern browser security features, such as Cross-Origin Resource Sharing (CORS) preflight and SameSite cookies, significantly limit the practical exploitability of this vulnerability.
Red Hat severity: Low — CVSS 3.1 (CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:L/A:N). Weakness: CWE-352.
Affected Red Hat products: Exploit Intelligence; Network Observability Operator; OpenShift Pipelines; Red Hat Ansible Automation Platform 2; Red Hat Data Grid 8; Red Hat OpenShift AI (RHOAI); Red Hat OpenShift Container Platform 4; Red Hat Quay 3; Red Hat Trusted Artifact Signer; Red Hat Trusted Profile Analyzer.
Affected versions
No affected-version range was extracted from the source record. The vendor advisory is authoritative — check it before change work.
Official advisory · high-confidence parse· fetched 3 days ago·verify at source
Mitigation checklist
- Red Hat products that ship react-router are affected by this CSRF bypass in Framework Mode on PUT, PATCH, and DELETE requests. However, modern browser protections — CORS preflight checks and SameSite cookie defaults — significantly limit the practical exploitability of this flaw. No specific workaround is required. Updating to react-router 7.15.1 or later, when available in product updates, will fully resolve this issue.
Official advisory · high-confidence parse· fetched 3 days ago·verify at source
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