CVE-2026-49448
authentik: SourceStage bypass via empty POST
CVSS Score
9.8
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-287 |
| Vendor | goauthentik |
| Product | authentik |
| Published | Jun 2, 2026 |
| Last Updated | Jun 3, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High
Affected Versions
goauthentik / authentik
< 2025.12.6 < 2026.2.4 < 2026.5.1