{"id":"CVE-2020-15242","aliases":["EUVD-2020-1439","GHSA-x56p-c8cg-q435"],"status":"published","title":"Open Redirect in Next.js","description":"Next.js versions \u003e=9.5.0 and \u003c9.5.4 are vulnerable to an Open Redirect. Specially encoded paths could be used with the trailing slash redirect to allow 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 attackers domain from a trusted domain. The issue is fixed in version 9.5.4.","severity":{"version":"3.1","score":4.7,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:N/A:N","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-10","score":0.00773,"percentile":0.56017,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-601"],"published":"2020-10-08T19:28:07Z","modified":"2026-10-20T10:51:53Z","fixes":[{"ecosystem":"npm","package":"next","fixed_in":["9.5.4"],"sources":["ghsa","osv"]}],"affected":[{"source":"ghsa","ecosystem":"npm","package":"next","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"9.5.0"},{"fixed":"9.5.4"}]}]},{"source":"osv","ecosystem":"npm","package":"next","ranges":[{"type":"SEMVER","events":[{"introduced":"9.5.0"},{"fixed":"9.5.4"}]}]}],"products":[{"vendor":"vercel","product":"next.js"}],"references":[{"url":"https://github.com/vercel/next.js/security/advisories/GHSA-x56p-c8cg-q435","tags":["x_refsource_CONFIRM","x_transferred","Patch","Third Party Advisory","fix","web"]},{"url":"https://github.com/zeit/next.js/releases/tag/v9.5.4","tags":["x_refsource_MISC","x_transferred","Release Notes","Third Party Advisory","advisory","web"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2020-15242","tags":["advisory"]},{"url":"https://github.com/advisories/GHSA-x56p-c8cg-q435"},{"url":"https://github.com/vercel/next.js","tags":["package"]}],"sources":{"cve":[{"id":"CVE-2020-15242","title":"Open Redirect in Next.js","description":"Next.js versions \u003e=9.5.0 and \u003c9.5.4 are vulnerable to an Open Redirect. Specially encoded paths could be used with the trailing slash redirect to allow 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 attackers domain from a trusted domain. The issue is fixed in version 9.5.4.","status":"published","published":"2020-10-08T19:50:12Z","modified":"2024-08-04T13:08:23.211Z","cvss":[{"version":"3.1","score":4.7,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:N/A:N","level":"medium","assessor":"cna"}],"cwes":["CWE-601"],"updated_at":"2026-11-02T14:35:50.545879Z"}],"euvd":[{"id":"EUVD-2020-1439","description":"Next.js versions \u003e=9.5.0 and \u003c9.5.4 are vulnerable to an Open Redirect. Specially encoded paths could be used with the trailing slash redirect to allow 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 attackers domain from a trusted domain. The issue is fixed in version 9.5.4.","status":"published","published":"2020-10-08T19:50:12Z","modified":"2024-08-04T13:08:23Z","cvss":[{"version":"3.1","score":4.7,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:N/A:N","level":"medium"}],"updated_at":"2026-11-03T03:07:32.55679Z"}],"ghsa":[{"id":"GHSA-x56p-c8cg-q435","title":"Open Redirect in Next.js versions","description":"### Impact\n\n- **Affected**: Users of Next.js between 9.5.0 and 9.5.3 \n- **Not affected**: Deployments on Vercel ([https://vercel.com](https://vercel.com)) are not affected\n- **Not affected**: Deployments using `next export`\n\nWe recommend everyone to upgrade regardless of whether you can reproduce the issue or not.\n\n### Patches\n\nhttps://github.com/vercel/next.js/releases/tag/v9.5.4\n\n### References\n\nhttps://github.com/vercel/next.js/releases/tag/v9.5.4\n\n","status":"published","published":"2020-10-08T19:28:07Z","modified":"2023-01-09T05:03:55Z","cvss":[{"version":"3.1","score":4.7,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:N/A:N","level":"medium"}],"cwes":["CWE-601"],"updated_at":"2026-11-02T14:36:07.581563Z"}],"nvd":[{"id":"CVE-2020-15242","description":"Next.js versions \u003e=9.5.0 and \u003c9.5.4 are vulnerable to an Open Redirect. Specially encoded paths could be used with the trailing slash redirect to allow 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 attackers domain from a trusted domain. The issue is fixed in version 9.5.4.","status":"published","published":"2020-10-08T20:15:19.493Z","modified":"2026-06-17T02:56:20.61Z","cvss":[{"version":"3.1","score":4.7,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:N/A:N","level":"medium","assessor":"secondary"},{"version":"3.1","score":6.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N","level":"medium","assessor":"primary"},{"version":"2.0","score":5.8,"vector":"AV:N/AC:M/Au:N/C:P/I:P/A:N","level":"medium","assessor":"primary"}],"cwes":["CWE-601"],"updated_at":"2026-11-02T14:06:19.351389Z"}],"osv":[{"id":"CVE-2020-15242","description":"Next.js versions \u003e=9.5.0 and \u003c9.5.4 are vulnerable to an Open Redirect. Specially encoded paths could be used with the trailing slash redirect to allow 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 attackers domain from a trusted domain. The issue is fixed in version 9.5.4.","status":"published","published":"2020-10-08T20:15:19.493Z","modified":"2026-10-20T10:51:53.676653877Z","cvss":[{"version":"3.1","score":6.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N","level":"medium"}],"updated_at":"2026-11-02T15:44:14.828228Z"},{"id":"GHSA-x56p-c8cg-q435","title":"Open Redirect in Next.js versions","description":"### Impact\n\n- **Affected**: Users of Next.js between 9.5.0 and 9.5.3 \n- **Not affected**: Deployments on Vercel ([https://vercel.com](https://vercel.com)) are not affected\n- **Not affected**: Deployments using `next export`\n\nWe recommend everyone to upgrade regardless of whether you can reproduce the issue or not.\n\n### Patches\n\nhttps://github.com/vercel/next.js/releases/tag/v9.5.4\n\n### References\n\nhttps://github.com/vercel/next.js/releases/tag/v9.5.4\n\n","status":"published","published":"2020-10-08T19:28:07Z","modified":"2026-09-10T03:48:35.467139366Z","cvss":[{"version":"3.1","score":4.7,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:N/A:N","level":"medium"}],"cwes":["CWE-601"],"updated_at":"2026-11-02T15:46:59.484835Z"}]}}