CVE-2026-107369: Improper Validation of Post-Login Redirect URL in nextjs-auth0
Medium · CVSS 6.1 (CVSS 3.1)EPSS 0.22%, 13th percentilePublished Updated Assigner: Okta
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.
Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N · CWE-601
Tracked companies
Mapped from the CVE’s affected-product data, NVD CPE matches, vendor advisories or package feeds. A mapping means the vendor’s software is named, not that its hosted service was exposed.
Status incidents that name it
No tracked status incident names this CVE.
Affected vendors and products
Auth0: nextjs-auth0
References
- CVE record on cve.org (opens in new tab)
- NVD entry (opens in new tab)
- github.com/auth0/nextjs-auth0/security/advisories/GHSA-5vvp-h2v6-59j6 (opens in new tab)
- trust.okta.com/security-advisories/improper-validation-of-post-login-redirect-url-in… (opens in new tab)
- CVE records from the CVE Program (cve.org). CVE® is a registered trademark of The MITRE Corporation. (opens in new tab)
- This product uses data from the NVD API but is not endorsed or certified by the NVD. (opens in new tab)
- Known Exploited Vulnerabilities catalog from CISA. (opens in new tab)
- EPSS scores from FIRST (Exploit Prediction Scoring System). (opens in new tab)