CVE-2026-25748
Published: Feb 12, 2026
Modified: Feb 17, 2026
CVSS v3.1
8.6
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.
| Vendor | Product | Versions |
|---|---|---|
goauthentik | authentik | affected >= 2025.10.0-rc1, < 2025.10.4affected >= 2025.10.0-rc1, < 2025.12.4 |
Weaknesses (CWE)
CVSS v3.1 Details
CVSS v3.1 Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability
References
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