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I. Basic Information for CVE-2026-25748
Vulnerability Information

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Vulnerability Title
authentik has a forward authentication bypass with broken cookie
Source: NVD (National Vulnerability Database)
Vulnerability Description
authentik is an open-source identity provider. Prior to 2025.10.4 and 2025.12.4, with a malformed cookie it was possible to bypass authentication when using forward authentication in the authentik Proxy Provider when used in conjunction with Traefik or Caddy as reverse proxy. When a malicious cookie was used, none of the authentik-specific X-Authentik-* headers were set which depending on application can grant access to an attacker. authentik 2025.10.4 and 2025.12.4 fix this issue.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N
Source: NVD (National Vulnerability Database)
Vulnerability Type
认证机制不恰当
Source: NVD (National Vulnerability Database)
Vulnerability Title
authentik 授权问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
authentik是authentik开源的一个开源身份提供应用程序。 authentik 2025.10.4之前版本和2025.12.4之前版本存在授权问题漏洞,该漏洞源于使用畸形Cookie时可能绕过身份验证,可能导致攻击者获得访问权限。
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
VendorProductAffected VersionsCPESubscribe
goauthentikauthentik >= 2025.10.0-rc1, < 2025.10.4 -
II. Public POCs for CVE-2026-25748
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III. Intelligence Information for CVE-2026-25748
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IV. Related Vulnerabilities
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