CVE-2025-61733: Apache Kylin Authentication Bypass Vulnerability
Summary
CVE-2025-61733: Apache Kylin Authentication Bypass Vulnerability. Affects org.apache.kylin:kylin versions >= 4.0.0, < 5.0.3. Fixed in 5.0.3. How to fix ↓
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Background
Apache Kylin is an open-source distributed analytics engine designed to provide a SQL interface and multi-dimensional analysis on Hadoop. It allows users to perform OLAP (Online Analytical Processing) on big data, enabling fast query performance and data exploration. However, versions 4.0.0 through 5.0.2 are susceptible to an authentication bypass vulnerability, which could allow unauthorized access to sensitive data.
Vulnerability Detail
The vulnerability arises from an authentication bypass issue that allows attackers to gain unauthorized access to the system through alternate paths or channels. This flaw can lead to significant security risks, including data breaches and unauthorized data manipulation. The issue affects all versions of Apache Kylin from 4.0.0 to 5.0.2, making it critical for users to address this vulnerability promptly.
How To Fix
Latest published version: 5.0.5 as of 23 Oct 2026
Upgrading to it may include breaking changes; the version below is the minimum fixed release for this vulnerability.
If you need the minimum change
5.0.3
This is the first release that contains the fix.
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Workaround
As a temporary measure, users may restrict access to the application by implementing network-level security controls or using application firewalls to block unauthorized access until the upgrade can be performed.
Conclusion
The authentication bypass vulnerability in Apache Kylin poses a significant risk to users of versions 4.0.0 through 5.0.2. It is crucial for users to upgrade to version 5.0.3 to ensure the security of their applications and data.
See every vulnerability recorded for org.apache.kylin:kylin →
FAQ
CVE-2025-61733 is a vulnerability in Apache Kylin that allows for authentication bypass, potentially leading to unauthorized access to sensitive data.
The vulnerability affects Apache Kylin versions from 4.0.0 to 5.0.2.
You can use Vulert, which monitors and alerts for open-source vulnerabilities in real-time. By checking your pom.xml file on the Vulert playground, you can determine if your application is affected.
Users are strongly advised to upgrade to version 5.0.3 or later to mitigate the vulnerability.
The CVSS score for this vulnerability is 7.5, indicating a high severity level.
References
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