Read the docs
TI-2025-41412 Aliases CVE-2025-67716GHSA-mr6f-h57v-rpj5

Auth0 Next.js SDK has Improper Validation of Query Parameters

Priority LOW 25CWE-184Published · Updated

Key facts

Attack vector
Network
Privileges required
High
User interaction
Required
Attack complexity
High
Impact type
—
Confidentiality · integrity · availability
High · High · None
Fix status
Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA and GitHub.

Summary

The Auth0 Next.js SDK is a library for implementing user authentication in Next.js applications. Versions 4.9.0 through 4.12.1 contain an input-validation flaw in the returnTo parameter, which could allow attackers to inject unintended OAuth query parameters into the Auth0 authorization request. Successful exploitation may result in tokens being issued with unintended parameters. This issue is fixed in version 4.13.0.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00262 18th percentileScored 2026-11-07
Fix Fixed nextjs-auth0 (auth0): 4.13.0@auth0/nextjs-auth0 (npm): 4.13.0

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
auth0nextjs-auth04.9.0 to before 4.13.04.13.0Patch availableCNA
—@auth0/nextjs-auth0 (npm)4.9.0 to before 4.13.04.13.0Patch availableGHSA-mr6f-h57v-rpj5
  • nextjs-auth0 Vendorauth0 Affected 4.9.0 to before 4.13.0 Fixed in 4.13.0 Patch available CNA
  • @auth0/nextjs-auth0 (npm) Vendor— Affected 4.9.0 to before 4.13.0 Fixed in 4.13.0 Patch available GHSA-mr6f-h57v-rpj5

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:auth0:nextjs-auth0:*:*:*:*:*:node.js:*:*4.9.0 to before 4.12.1Vulnerableauth0
  • cpe:2.3:a:auth0:nextjs-auth0:*:*:*:*:*:node.js:*:* Versions 4.9.0 to before 4.12.1 Vulnerable ·auth0

Remediation

  • Fix · CNA nextjs-auth0 (auth0) Fixed in 4.13.0
  • Fix · GHSA-mr6f-h57v-rpj5 @auth0/nextjs-auth0 (npm) Fixed in 4.13.0 Advisory →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2025-67716
  2. 2026-10-03 Alias added: GHSA-mr6f-h57v-rpj5

References

Patch 1

Advisory 2

Other 1

  • TI-2021-12370 Reflected XSS from the callback handler's error query parameter CVSS 3.1HIGH 8.0
  • TI-2021-19618 Open redirect in nextjs-auth0 CVSS 3.1MEDIUM 6.4
  • TI-2026-28970 Auth0 Next.js SDK has Improper Proxy Cache Lookup CVSS 3.1MEDIUM 5.4
  • TI-2025-41249 Auth0 Next.js SDK has Improper Request Caching Lookup CVSS 3.1MEDIUM 5.4

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences