CVE-2026-49448 Details
Description
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.
A vulnerability in authentik, an open-source identity provider, allows for bypassing the Source stage in authentication flows. This issue is present in versions through 2025.12.5, 2026.2.3, and 2026.5.0. The vulnerability arises because the Source stage can be skipped by sending an empty POST request. When the Source stage is active, the flow executor expects a restore token from the user’s interaction with the identity provider (IdP). However, an empty POST request is accepted as valid, allowing the flow to advance without proper authentication. This bypass can be exploited if the Source stage is part of an authentication flow that requires interaction with an IdP.
Users should update to authentik versions 2025.12.6, 2026.2.4, or 2026.5.1, where this vulnerability has been patched.
Metrics
CVSS 4.0 Severity and Vector Strings:
No CVSS 4.0 data is available for this CVE.
CVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
CISA-ADP
Assessed Jun 3, 2026References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://github.com/goauthentik/authentik/security/advisories/GHSA-xp7f-xjjx-gwm8 | CISA-ADP | ExploitVendor Advisory |
| https://github.com/goauthentik/authentik/security/advisories/GHSA-xp7f-xjjx-gwm8 | [email protected] | ExploitVendor Advisory |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-287 | Improper Authentication | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| goauthentik authentik | < 2025.12.6 >= 2026.2.0, < 2026.2.4 >= 2026.5.0, < 2026.5.1 |
CPE
Remediation
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Change History
6 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jul 22, 2026 | CVE Translated | [email protected] |
| Jun 17, 2026 | CVE Modified | [email protected] |
| Jun 17, 2026 | CVE Modified | CISA-ADP |
| Jun 4, 2026 | Initial Analysis | [email protected] |
| Jun 3, 2026 | CVE Modified | CISA-ADP |
| Jun 2, 2026 | New CVE Received | [email protected] |