CVE-2026-107369
Improper Validation of Post-Login Redirect URL in nextjs-auth0
- State
- Published
- Severity
- 6.1 Medium
- Published
- Oct 13, 2026
- Updated
- Oct 14, 2026
- Reserved
- Oct 7, 2026
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 3.1 | 6.1 Medium | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N | Okta |
Weaknesses
- CWE-601 URL Redirection to Untrusted Site ('Open Redirect')
Affected Products
| Product | Versions |
|---|---|
nextjs-auth0Auth0 |
|
References
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