{"id":"CVE-2026-107369","url":"https://www.cyber-defence.io/tools/cve/CVE-2026-107369","generatedAt":"2026-10-28T01:53:29.699Z","title":"The auth0/nextjs-auth0 SDK validates that the returnTo parameter is a same-origin URL.","description":"The auth0/nextjs-auth0 SDK validates that the returnTo parameter is a same-origin URL. The SDK then stores this value and, in a later step, reconstructs it for the post-authentication redirect. The reconstruction logic can produce a URL that browsers interpret as an absolute or scheme-relative path, leading to a redirect to an unintended domain.","published":"2026-10-13T21:17:32.000Z","lastModified":"2026-10-15T20:38:04.000Z","status":"Awaiting Analysis","sourceIdentifier":"psirt@okta.com","cvss":{"version":"3.1","score":6.1,"severity":"MEDIUM","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N"},"cwe":["CWE-601"],"affected":[],"epss":{"score":0.00225,"percentile":0.13045,"date":"2026-10-26","history":[{"date":"2026-10-14","score":0.00225,"percentile":0.12213}]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"low","text":"Lower severity and a low EPSS score (0.22%). Track it; it rarely justifies an emergency change on its own."},"changes":[{"kind":"new","label":"New CVE","at":"2026-10-13T21:17:32.000Z","detail":{"score":"6.1","severity":"MEDIUM","publishedAt":"2026-10-13T21:17:32.093Z"},"summary":"New CVE, medium severity (CVSS 6.1)."}],"references":[{"url":"https://github.com/auth0/nextjs-auth0/security/advisories/GHSA-5vvp-h2v6-59j6","source":"psirt@okta.com"},{"url":"https://trust.okta.com/security-advisories/improper-validation-of-post-login-redirect-url-in-nextjs-auth0-cve-2026-107369","source":"psirt@okta.com"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-107369","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."}