{"id":"CVE-2026-55685","url":"https://www.cyber-defence.io/tools/cve/CVE-2026-55685","generatedAt":"2026-10-28T02:11:17.951Z","title":"React Router is a router for React.","description":"React Router is a router for React. In versions 7.0.0 through 7.17.0, the manifest endpoint could be accessed via unauthenticated targeted requests that would put heavy load on the server and slow down response times. This issue is a follow up to CVE-2026-42342, and does not does not impact React Router applications using Declarative Mode (<BrowserRouter>) or Data Mode (createBrowserRouter/<RouterProvider>). This issue has been fixed in version 7.18.0.","published":"2026-07-27T22:17:41.000Z","lastModified":"2026-10-24T13:10:00.000Z","status":"Analyzed","sourceIdentifier":"security-advisories@github.com","cvss":{"version":"4.0","score":8.7,"severity":"HIGH","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/M"},"cwe":["CWE-400","CWE-407"],"affected":["shopify/react-router"],"epss":{"score":0.00708,"percentile":0.53205,"date":"2026-10-26","history":[]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"high","text":"High impact if exploited, but EPSS currently rates exploitation as unlikely (0.71%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit."},"changes":[],"references":[{"url":"https://github.com/remix-run/react-router/blob/main/CHANGELOG.md#v7180","tags":["Release Notes"],"source":"security-advisories@github.com"},{"url":"https://github.com/remix-run/react-router/commit/09e6020d1950e54f361f7ad00938ecd4dde60929","tags":["Patch"],"source":"security-advisories@github.com"},{"url":"https://github.com/remix-run/react-router/pull/15186","tags":["Issue Tracking","Patch"],"source":"security-advisories@github.com"},{"url":"https://github.com/remix-run/react-router/releases/tag/react-router@7.18.0","tags":["Release Notes"],"source":"security-advisories@github.com"},{"url":"https://github.com/remix-run/react-router/security/advisories/GHSA-8x6r-g9mw-2r78","tags":["Third Party Advisory"],"source":"security-advisories@github.com"},{"url":"https://github.com/remix-run/react-router/security/advisories/GHSA-chx6-hx7r-mcp5","tags":["Third Party Advisory"],"source":"security-advisories@github.com"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-55685","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}