🛡️ CVE-2021-43812 — nextjs-auth0

⚪ Unknown ✅ No Known Exploit CWE-601 OSV
N/A
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

Open redirect in @auth0/nextjs-auth0

Overview

Versions <=1.6.1 do not filter out certain returnTo parameter values from the login url, which expose the application to an open redirect vulnerability.

Am I affected?

You are affected by this vulnerability if you are using @auth0/nextjs-auth0 version <=1.6.1.

How to fix that?

Upgrade to version >=1.6.2

Will this update impact my users?

The fix provided in the patch will not affect your users.

How this vulnerability can be exploited

This issue can be reached over the network, attack complexity is low, an attacker needs low-level privileges on the target. No user interaction is required. The scope is changed, meaning a successful attack can affect components beyond the vulnerable one. Rated impact: confidentiality low, integrity low, availability none.

Weakness class

CVE-2021-43812 is classified as CWE-601: Open Redirect. A redirect target is taken from user input, so a trusted link can send the visitor to an attacker's site.

Affected software

CVE-2021-43812 is recorded against 1 package.

  • @auth0/nextjs-auth0

Timeline and source

Published on 16 December 2021 and last revised on 8 July 2026. No public exploit is currently recorded for this entry. Record sourced from OSV.

References

github.com (Web)
nvd.nist.gov (Advisory)
github.com (Web)
github.com (Package)

Details

Severity Unknown
CVSS Score N/A
CVSS Vector CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N
CWE CWE-601
Public Exploit ✅ No
Source OSV
Published 2021-12-16
Updated 2026-08-12
Modified 2026-07-08
Fix URL N/A

Affected Packages

Software From version Fixed in
@auth0/nextjs-auth0 — —

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