authentik is an open-source identity provider. Prior to versions 2025.12.6, 2026.2.4, and 2026.5.1, the Source stage can be bypassed by sending an empty POST. This issue has been patched in versions 2025.12.6, 2026.2.4, and 2026.5.1.
Attack Parameters
Attack Vector
Network
Can be exploited remotely
Attack Complexity
Low
Easy to exploit
Privileges Required
None
No privileges needed
User Interaction
None
No user interaction needed
Impact Assessment
Confidentiality
High
Complete data leak
Integrity
High
Complete data modification
Availability
High
Complete denial of service
CVSS Vector v3.1
Weakness Type (CWE)
Vulnerable Products 3
| Configuration | From (including) | Up to (excluding) |
|---|---|---|
|
Goauthentik Authentik
cpe:2.3:a:goauthentik:authentik:*:*:*:*:*:*:*:*
|
— |
2025.12.6
|
|
Goauthentik Authentik
cpe:2.3:a:goauthentik:authentik:*:*:*:*:*:*:*:*
|
2026.2.0
|
2026.2.4
|
|
Goauthentik Authentik
cpe:2.3:a:goauthentik:authentik:*:*:*:*:*:*:*:*
|
2026.5.0
|
2026.5.1
|