{"cve":"CVE-2021-37699","nvd":{"published":"2021-08-12T00:15:06.997","modified":"2026-06-17T04:01:00.680","status":"Modified","description":"Next.js is an open source website development framework to be used with the React library. In affected versions specially encoded paths could be used when pages/_error.js was statically generated allowing an open redirect to occur to an external site. In general, this redirect does not directly harm users although can allow for phishing attacks by redirecting to an attacker's domain from a trusted domain. We recommend everyone to upgrade regardless of whether you can reproduce the issue or not. The issue has been patched in release 11.1.0.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N","score":6.1},"cwes":["CWE-601"],"references":["https://github.com/vercel/next.js/releases/tag/v11.1.0","https://github.com/vercel/next.js/security/advisories/GHSA-vxf5-wxwp-m7g9","https://github.com/vercel/next.js/releases/tag/v11.1.0","https://github.com/vercel/next.js/security/advisories/GHSA-vxf5-wxwp-m7g9"],"products":["vercel:next.js"],"source":"nvd","synced_at":"2026-10-19T21:21:57.125947417+00:00"},"epss":{"cve":"CVE-2021-37699","score":0.01033,"percentile":0.63795,"date":"2026-10-31"},"kev":null,"osv":[{"id":"GHSA-vxf5-wxwp-m7g9","url":"https://osv.dev/vulnerability/GHSA-vxf5-wxwp-m7g9","summary":"Open Redirect in Next.js","modified":"2026-07-08T06:00:27.645033544Z","packages":[{"ecosystem":"npm","name":"next","purl":"pkg:npm/next","ranges":[">=0.9.9 <11.1.0"],"fixed":["11.1.0"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}