CVE-2026-126129

Quick assessment

Affected

Auth0 Auth0 ASP.NET Core Authentication

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 的 ASP.NET Core 身份验证 SDK 错误地判断了会话的 OIDC 后台注销（Back-Channel Logout）状态，这可能导致已注销的会话仍被允许访问受保护的端点。

AI Predicted 7.5 Difficulty: Easy Updated Nov 11, 2026

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application

Updated Nov 11, 2026

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Vulnerability Information

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Vulnerability Title

N/A

Source: CVE Program / CVE List V5

Vulnerability Description

The Auth0 ASP.NET Core Authentication SDK incorrectly determines a session's OIDC Back-Channel Logout status, which may result in a logged-out session being accepted for access to protected endpoints.

Source: CVE Program / CVE List V5

CVSS Information

N/A

Source: CVE Program / CVE List V5

Vulnerability Type

在安全决策中依赖未经信任的输入

Source: CVE Program / CVE List V5

Affected Products

Vendor	Product	Affected Versions	CPE	Subscribe
Auth0	Auth0 ASP.NET Core Authentication	0 ~ 1.12.0	-

II. Public POCs for CVE-2026-126129

#	POC Description	Source Link	Shenlong Link

AI-Generated POC Premium

No public POC found.

III. Intelligence Information for CVE-2026-126129

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Other References for CVE-2026-126129 (1)

https://trust.okta.com/security-advisories/improper-backchannel-session-revocation-in-the-auth0-asp-net-core-authentication-sdk-cve-2026-126129

https://www.cve.org/CVERecord?id=CVE-2026-126129

Same Patch Batch · Auth0 · 2026-11-10 · 4 CVEs total

CVE-2026-108167		auth0-ai-python FGA 检索器越权漏洞
CVE-2026-107372		auth0-ai-js FGA检索器权限绕过漏洞
CVE-2026-126128		Auth0 Node.js SDK 路径参数处理不当导致越权访问

IV. Related Vulnerabilities

Same vendor: Auth0

Same weakness: CWE-807