What is the CVSS score of CVE-2025-52553?

CVE-2025-52553 has a CVSS 3.1 base score of 9.6 (Critical). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H. EPSS exploitation probability: 0.1%.

Which versions of Authentik are affected by CVE-2025-52553?

Organizations using authentik face critical risk from CVE-2025-52553, a improper authentication vulnerability rated CVSS 9.6.. A patch is available.

How to fix or mitigate CVE-2025-52553?

Within 24 hours: Identify all affected systems and apply vendor patches immediately. Audit authentication configurations and rotate any potentially compromised credentials.

Authentik CVE-2025-52553

EUVD-2025-19409 CRITICAL

Improper Authentication (CWE-287)

2025-06-27 security-advisories@github.com

Authentication Bypass Authentik

9.6

CVSS 3.1 · GitHub Advisory

Severity by source

GitHub Advisory PRIMARY

9.6 CRITICAL

AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H

Primary rating from GitHub Advisory · only source for this CVE.

CVSS VectorGitHub Advisory

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

Required

Scope

Changed

Confidentiality

High

Integrity

High

Availability

High

Lifecycle Timeline

EUVD ID Assigned

Mar 16, 2026 - 00:16 euvd

EUVD-2025-19409

Analysis Generated

Mar 16, 2026 - 00:16 vuln.today

Patch released

Mar 16, 2026 - 00:16 nvd

Patch available

CVE Published

Jun 27, 2025 - 15:15 nvd

CRITICAL 9.6

DescriptionGitHub Advisory

authentik is an open-source identity provider. After authorizing access to a RAC endpoint, authentik creates a token which is used for a single connection and is sent to the client in the URL. This token is intended to only be valid for the session of the user who authorized the connection, however this check is missing in versions prior to 2025.6.3 and 2025.4.3. When, for example, using RAC during a screenshare, a malicious user could access the same session by copying the URL from the shown browser. authentik 2025.4.3 and 2025.6.3 fix this issue. As a workaround, it is recommended to decrease the duration a token is valid for (in the RAC Provider settings, set Connection expiry to minutes=5 for example). The maintainers of authentik also recommend enabling the option Delete authorization on disconnect.

Analysis

Technical ContextAI

An authentication bypass vulnerability allows attackers to circumvent login mechanisms and gain unauthorized access without valid credentials. This vulnerability is classified as Improper Authentication (CWE-287).

RemediationAI

A vendor patch is available — apply it immediately. Implement robust authentication mechanisms. Use multi-factor authentication. Review authentication logic for bypass conditions. Remove default credentials.