CVE-2026-107369— Improper Validation of Post-Login Redirect URL in nextjs-auth0
Quick assessment
Affected
Auth0 nextjs-auth0
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.
auth0/nextjs-auth0 SDK 会验证 参数是否为同源 URL。随后，SDK 会将该值存储，并在认证后的后续步骤中重新构建该 URL，用于重定向回用户。然而，这种重新构建逻辑可能会生成一个被浏览器解释为绝对路径或协议相对路径（scheme-relative path）的 URL，从而导致意外重定向至非预期的域名。
Possible ATT&CK Techniques 2 AI
T1189 · Drive-by Compromise T1190 · Exploit Public-Facing ApplicationAffected Version Matrix 1
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| Auth0 | nextjs-auth0 | < 4.32.0 |
affected |
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I. Basic Information for CVE-2026-107369
Vulnerability Information
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Vulnerability Title
Improper Validation of Post-Login Redirect URL in nextjs-auth0
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
指向未可信站点的URL重定向(开放重定向)
Source: CVE Program / CVE List V5
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| Auth0 | nextjs-auth0 | 0 ~ 4.32.0 | - |
|
II. Public POCs for CVE-2026-107369
| # | POC Description | Source Link | Shenlong Link |
|---|
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Vendor Advisories for CVE-2026-107369 (2)
Same Patch Batch · Auth0 · 2026-10-13 · 4 CVEs total
| CVE-2026-107371 | 5.4 MEDIUM | Missing Verification of auth_time Claim in auth0.js |
| CVE-2026-85473 | 5.3 MEDIUM | Out-of-Range Timestamp Claim Handling in auth0/java-jwt |
| CVE-2026-107370 | 5.3 MEDIUM | Improper Request Handling for Active Directory Logins in auth0-lock |
IV. Related Vulnerabilities
Same product: nextjs-auth0
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CVE-2026-40155
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Auth0 Next.js SDK has Improper Validation of Query Parameter -
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CVE-2025-48947
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CVE-2025-46344
Auth0 NextJS SDK v4 Missing Session Invalidation
Same vendor: Auth0
-
CVE-2026-85473
Out-of-Range Timestamp Claim Handling in auth0/java-jwt -
CVE-2026-107371
Missing Verification of auth_time Claim in auth0.js -
CVE-2026-107370
Improper Request Handling for Active Directory Logins in aut -
CVE-2026-50157
Auth0 Symfony: Bearer Token Accepted via URL Query Parameter -
CVE-2026-84685
Improper Cache Isolation in auth0/react-native-auth0 SDK Web
Same weakness: CWE-601
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smart-sso through 2.1.1 OAuth2 Authorization Code Theft via -
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Scoold: Open Redirect in getBackToUrl() allows phishing via -
CVE-2026-72528
Creema App开放重定向漏洞
V. Comments for CVE-2026-107369
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