Improper access control in authentik - CVE-2024-23647
Published: January 30, 2024 / Updated: April 23, 2026
Vulnerability identifier: #VU85890
CSH Severity: Medium
CVSSv4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2024-23647
CWE-ID: CWE-284
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 gain unauthorized access to otherwise restricted functionality.
The vulnerability exists due to improper access restrictions in the PKCE implementation. A remote attacker can bypass implemented security restrictions and perform a PKCE downgrade attack on the system.
Remediation
Install updates from vendor's website.