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: 2026-10-13
Score: 6.1 Medium
EPSS: < 1% Very Low
KEV: No
AI Analysis

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Remediation

Vendor Solution

Upgrade auth0/nextjs-auth0 to version 4.32.0 or greater.

Tracking

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Advisories

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History

Wed, 14 Oct 2026 19:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Tue, 13 Oct 2026 20:30:00 +0000

Type Values Removed Values Added
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.
Title Improper Validation of Post-Login Redirect URL in nextjs-auth0
Weaknesses CWE-601
References
Metrics cvssV3_1

{'score': 6.1, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N'}


Subscriptions

No data.

cve-icon MITRE

Status: PUBLISHED

Assigner: Okta

Published:

Updated: 2026-10-14T18:41:32.403Z

Reserved: 2026-10-07T20:59:17.368Z

Link: CVE-2026-107369

cve-icon Vulnrichment

Updated: 2026-10-14T18:41:28.190Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2026-10-13T21:17:32.093

Modified: 2026-10-15T20:38:04.303

Link: CVE-2026-107369

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-10-15T10:45:18Z

Weaknesses