{"id":"CVE-2026-53663","sourceIdentifier":"security-advisories@github.com","published":"2026-06-22T19:17:13.167","lastModified":"2026-06-23T16:04:55.583","vulnStatus":"Awaiting Analysis","cveTags":[],"descriptions":[{"lang":"en","value":"React Router is a router for React. From 7.12.0 until 7.15.1, certain CSRF checks in React Router v7 Framework Mode were insufficient and run on POST requests, but were bypassed on PUT/PATCH/DELETE requests. 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."}],"affected":[{"source":"security-advisories@github.com","affectedData":[{"vendor":"remix-run","product":"react-router","versions":[{"version":">= 7.12.0, < 7.15.1","status":"affected"}]},{"vendor":"@remix-run","product":"server-runtime","versions":[{"version":">= 2.17.3, < 2.17.5","status":"affected"}]}]}],"metrics":{"cvssMetricV31":[{"source":"security-advisories@github.com","type":"Secondary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:L/A:N","baseScore":3.1,"baseSeverity":"LOW","attackVector":"NETWORK","attackComplexity":"HIGH","privilegesRequired":"NONE","userInteraction":"REQUIRED","scope":"UNCHANGED","confidentialityImpact":"NONE","integrityImpact":"LOW","availabilityImpact":"NONE"},"exploitabilityScore":1.6,"impactScore":1.4}],"ssvcV203":[{"source":"134c704f-9b21-4f2e-91b3-4a467353bcc0","ssvcData":{"timestamp":"2026-06-22T19:52:41.379004Z","id":"CVE-2026-53663","options":[{"exploitation":"none"},{"automatable":"no"},{"technicalImpact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}]},"weaknesses":[{"source":"security-advisories@github.com","type":"Secondary","description":[{"lang":"en","value":"CWE-352"}]}],"references":[{"url":"https://github.com/remix-run/react-router/security/advisories/GHSA-84g9-w2xq-vcv6","source":"security-advisories@github.com"}]}