Reliance on Untrusted Inputs in a Security Decision in authentik - CVE-2026-94606
Published: September 9, 2026 / Updated: September 28, 2026
Vulnerability identifier: #VU148587
CSH Severity: High
CVSS v4: 9.2 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:L/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-94606
CWE-ID: CWE-807
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to bypass multi-factor authentication and sign in as another user.
The vulnerability exists due to reliance on untrusted input in a security decision in the email authenticator setup process when processing an authenticator setup request. A remote attacker can supply an email address they control and use the delivered one-time code to sign in as the target user.
Exploitation requires knowledge of the target user's password, an unenrolled email factor, and a deployment that enrolls the email authenticator during an authentication or enrollment flow.
Affected software
authentik
How to mitigate CVE-2026-94606
Install security update from vendor's website.
authentik - addressed in versions 2026.2.7, 2026.5.7, 2026.8.2