CVE-2025-53942Network attack vector

Application authorization via inactive federated accounts

Published Jul 23, 2025 · Updated Jul 23, 2025

Authentication bypass in authentik before 2025.4.4 and 2025.6.0-rc1 through 2025.6.3 allows remote attackers to authorize applications. The user login stage only logged a warning for an inactive pending user and continued establishing a half-authenticated session. Exploitation requires an account enrolled through or linked to OAuth or SAML and knowledge of an application URL; API access remains blocked.

CVSS severity7.1
High
EPSS probability0.49%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Authentication bypass in authentik before 2025.4.4 and 2025.6.0-rc1 through 2025.6.3 allows remote attackers to authorize applications. The user login stage only logged a warning for an inactive pending user and continued establishing a half-authenticated session. Exploitation requires an account enrolled through or linked to OAuth or SAML and knowledge of an application URL; API access remains blocked.

The record

CVE
CVE-2025-53942
Published
Jul 23, 2025
Updated
Jul 23, 2025
Vendor
Authentik Security Inc.
Product
authentik
Classifications
CWE-269, T1078
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jul 23, 2025CVE publishedPublication date reported by the CVE source.
  2. Jul 23, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=<= 2025.4.3, < 2025.4.4
  2. Affected versionversion=>= 2025.6.0-rc1, < 2025.6.4

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Authentik Security Inc. · authentikversion=<= 2025.4.3, < 2025.4.4; version=>= 2025.6.0-rc1, < 2025.6.4

Published CVSS scores

7.4NVDCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
7.1GitHubCVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:N/SC:H/SI:H/SA:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-269Improper Privilege Management
T1078Valid Accounts

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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