{"id":"CVE-2026-107369","published":"2026-10-13T21:17:32.093","lastModified":"2026-10-15T20:38:04.303","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.","cvssScore":6.1,"cvssSeverity":"MEDIUM","cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N","cwes":["CWE-601"],"vendors":[],"products":[],"references":[{"url":"https://github.com/auth0/nextjs-auth0/security/advisories/GHSA-5vvp-h2v6-59j6","tags":[]},{"url":"https://trust.okta.com/security-advisories/improper-validation-of-post-login-redirect-url-in-nextjs-auth0-cve-2026-107369","tags":[]}],"exploitRefs":[{"url":"https://github.com/auth0/nextjs-auth0/security/advisories/GHSA-5vvp-h2v6-59j6","tags":[]}],"hasPoc":true,"ai":null}