CVEvulnerability

CVE-2026-25748

7.5 HIGH Published 2026-02-12 Modified 2026-06-17 Official page ↗
Status
Analyzed
Published
2026-02-12
Last modified
2026-06-17
Assigner
[email protected]
CVSS 3.1 ([email protected])
8.6 HIGH — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N
CVSS 3.1 ([email protected])
7.5 HIGH — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Weaknesses
CWE-287

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.

Affected configurations

• goauthentik authentik (< 2025.10.4) • goauthentik authentik (>= 2025.12.0 < 2025.12.4)

Related

Weakness · CWE (1)

  • CWE-287 Improper Authentication weakness

References