CVE-2026-108709

Critical

Description

Authentication bypass within in-house network in Apache Kylin. Impact most to the kylin services that are directly exposed to public network, which is not common. In-house kylin deployments are mostly not impacted. This issue affects Apache Kylin: from 4.0.4 through 5.0.4. Users are recommended to upgrade to version 5.0.5, which fixes the issue.

SeverityCritical

CVSS9.8

Exploit probability—

ProductApache Kylin

PublishedOct 16, 2026

First seenOct 16, 2026

Weakness typeCWE-287Improper authentication

How to fix

Vendor advisories

lists.apache.org/thread.html/okkvcvoj1007f6cxhwp9v6j6t4ynfnwb

Affected products

Product	Affected versions	Fixed in
Apache Software Foundation Apache Kylin	4.0.4 ≤ v ≤ 5.0.4	—

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