CVE-2026-108743

Apache Kylin exposes sensitive information (system-level configuration info) to an unauthorized actor. This issue affects Apache Kylin from 4 through 5.0.4.

A vulnerability in Apache Kylin involving missing authentication for in-house broadcast and polymorphic deserialization. It affects versions 4.0.0 through 5.0.4 and impacts mainly services directly exposed to the public network.

Improper Authentication vulnerability in Apache Kylin. An unauthenticated user may access system cleanup actions. The issue affects versions from 4 through 5.0.4.

Authentication bypass within in-house network in Apache Kylin. The issue affects versions from 4.0.4 through 5.0.4.

Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection') and Missing Authentication for Critical Function vulnerability in Apache Kylin. Certain backend cache API misses required authentication and can cause execution of injected SQL. This issue affects Apache Kylin from 5 through 5.0.4 and impacts most the Kylin services directly exposed to the public network.

Deserialization of Untrusted Data vulnerability in Apache Kylin. Unsafe Java deserialization could happen from a broken external cache service. This issue affects Apache Kylin from 4 through 5.0.4.

Missing Authorization vulnerability in Apache Kylin. A backend metadata dump API misses enough authorization and path-confinement. This issue affects Apache Kylin from 4 through 5.0.4 and impacts most the Kylin services directly exposed to the public network.

An OS Command Injection vulnerability has been found in Apache Kylin. Improper neutralization of special elements in job configuration parameters may allow an attacker to execute arbitrary commands via the backend API. Affects versions 4 through 5.0.3.

An SQL injection vulnerability was found in Apache Kylin's backend API that refreshes the table catalog. An attacker can inject malicious SQL into the generated query.

Files or Directories Accessible to External Parties vulnerability in Apache Kylin. You are fine as long as the Kylin's system and project admin access is well protected. This issue affects Apache Kylin: from 4.0.0 through 5.0.2. Users are recommended to upgrade to version 5.0.3, which fixes the issue.