CVE-2021-27738: Apache Kylin

High severity, CVSS 7.5. EPSS: 2.6% chance of exploitation in the next 30 days.

All request mappings in `StreamingCoordinatorController.java` handling `/kylin/api/streaming_coordinator/*` REST API endpoints did not include any security checks, which allowed an unauthenticated user to issue arbitrary requests, such as assigning/unassigning of streaming cubes, creation/modification and deletion of replica sets, to the Kylin Coordinator. For endpoints accepting node details in HTTP message body, unauthenticated (but limited) server-side request forgery (SSRF) can be achieved. This issue affects Apache Kylin Apache Kylin 3 versions prior to 3.1.2.

Affected products

• Apache Kylin: from 3.0.0, before 3.1.2 (fixed in 3.1.2)

Published 2022-01-06. Last modified 2026-06-17.