Apache Kylin Remote Code and Auth Vulnerabilities

SQL injection in Apache Kylin (versions 4 through 5.0.3) allows attackers to inject arbitrary SQL through a backend API used to refresh the table catalog, where untrusted input is concatenated into a dynamically generated SQL statement. The upstream CVSS 3.1 vector rates this as unauthenticated (PR:N) with full confidentiality, integrity, and availability impact (9.8), enabling database read/write and potentially further compromise. There is no public exploit identified at time of analysis and it is not listed in CISA KEV.

OS command injection in Apache Kylin (versions 4 through 5.0.3) allows attackers to execute arbitrary operating-system commands by supplying malicious job configuration parameters that a backend API passes unsanitized to the OS command line. Because Kylin runs as a distributed analytics engine, successful exploitation yields full host compromise with the privileges of the Kylin service account. Per the vendor CVSS (AV:N/PR:N), the flaw is scored as network-reachable and unauthenticated with high impact across confidentiality, integrity, and availability; no public exploit is identified at time of analysis, and it is not listed in CISA KEV.

Improper authorization in Apache Kylin's REST API job endpoints allows authenticated users to retrieve job metadata from projects they are not authorized to access. The `JobController.getJobList` and `JobController.getJobDetail` endpoints lack project-scoped permission verification, meaning any authenticated user can query build job information across project boundaries within a shared Kylin deployment. Apache Kylin versions 4 through 5.0.3 are affected; no public exploit code or active exploitation has been identified at time of analysis.