#VU127137 Improper Authentication in authentik - CVE-2024-47070
Published: September 27, 2024 / Updated: April 23, 2026
Vulnerability identifier: #VU127137
Vulnerability risk: High
CVSSv4.0: CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber
CVE-ID: CVE-2024-47070
CWE-ID: CWE-287
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerable software:
authentik
authentik
Software vendor:
Authentik Security Inc
Authentik Security Inc
Description
The vulnerability allows a remote attacker to bypass authentication and authorize as any account with a known login or email address.
The vulnerability exists due to improper authentication in authentication and authorization flows when processing an X-Forwarded-For header with an unparsable IP address. A remote attacker can send a specially crafted request with a malformed X-Forwarded-For header to bypass authentication and authorize as any account with a known login or email address.
Exploitation is possible when the X-Forwarded-For header is not correctly controlled and policies are bound to authentication or authorization flows.
Remediation
Install security update from vendor's website.