CVE-2021-43812— Open redirect in nextjs-auth0
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I. Basic Information for CVE-2021-43812
Vulnerability Information
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Vulnerability Title
Open redirect in nextjs-auth0
Source: NVD (National Vulnerability Database)
Vulnerability Description
The Auth0 Next.js SDK is a library for implementing user authentication in Next.js applications. Versions before 1.6.2 do not filter out certain returnTo parameter values from the login url, which expose the application to an open redirect vulnerability. Users are advised to upgrade as soon as possible. There are no known workarounds for this issue.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N
Source: NVD (National Vulnerability Database)
Vulnerability Type
指向未可信站点的URL重定向(开放重定向)
Source: NVD (National Vulnerability Database)
Vulnerability Title
Auth0 输入验证错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Auth0是是一个身份验证代理，支持社会和企业身份提供者，包括Active Directory、LDAP、谷歌Apps和Salesforce。 Auth0 Next.js SDK 1.6.2之前版本存在输入验证错误漏洞，该漏洞源于程序不会从登录url中过滤掉某些returnTo参数值，这将使应用程序暴露在开放重定向漏洞中。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| auth0 | nextjs-auth0 | < 1.6.2 | - |
II. Public POCs for CVE-2021-43812
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|---|
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IV. Related Vulnerabilities
Same product: nextjs-auth0
- CVE-2026-40155
Auth0 Next.js SDK has Improper Proxy Cache Lookup - CVE-2025-67716
Auth0 Next.js SDK has Improper Validation of Query Parameter - CVE-2025-67490
Auth0 Next.js SDK has Improper Request Caching Lookup - CVE-2025-48947
NextJS-Auth0 SDK Vulnerable to CDN Caching of Session Cookie - CVE-2025-46344
Auth0 NextJS SDK v4 Missing Session Invalidation
Same vendor: auth0
- CVE-2026-40155
Auth0 Next.js SDK has Improper Proxy Cache Lookup - CVE-2026-34236
Auth0 PHP SDK Insufficient Entropy in Cookie Encryption - CVE-2025-68129
Auth0-PHP SDK has Improper Audience Validation - CVE-2025-67716
Auth0 Next.js SDK has Improper Validation of Query Parameter - CVE-2025-67490
Auth0 Next.js SDK has Improper Request Caching Lookup
Same weakness: CWE-601
- CVE-2026-42350
Kargo: Open Redirect in UI OIDC Login Flow via redirectTo Qu - CVE-2026-42195
Unvalidated gitlab URL parameter redirects OAuth authorize s - CVE-2026-3318
Multiple vulnerabilities in Cradle e-commerce - CVE-2026-42259
Saltcorn: Open Redirect in `POST /auth/login` due to incompl - CVE-2026-6795
Open Redirect in DivvyDrive Information Technologies' DivvyD
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