CVE-2026-108771

Apache Kylin: unauthenticated broadcast API and polymorphic deserialization

Published Oct 19, 2026 CVSS 3.1 · 9.8 Critical EPSS < 1% KEV · Not listed
Description
Missing authentication for in-house broadcast and polymorphic deserialization vulnerability 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 4.0.0 through 5.0.4.



Users are recommended to upgrade to version 5.0.5, which fixes the issue.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
Metrics cvssV3_1

{'score': 9.8, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H'}

ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}

Type Values Removed Values Added
First Time appeared Apache
Apache apache Kylin
Apache Software Foundation
Apache Software Foundation apache Kylin
Vendors & Products Apache
Apache apache Kylin
Apache Software Foundation
Apache Software Foundation apache Kylin
Type Values Removed Values Added
Description Missing authentication for in-house broadcast and polymorphic deserialization vulnerability 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 4.0.0 through 5.0.4. Users are recommended to upgrade to version 5.0.5, which fixes the issue.
Title Apache Kylin: unauthenticated broadcast API and polymorphic deserialization
Weaknesses CWE-306
References
Weaknesses

Sources

Status
PUBLISHED
Assigner
apache
Published
Updated
Oct 30, 2026, 4:31 PM
Reserved
Oct 11, 2026, 7:26 AM
Status
Deferred
Published
Oct 19, 2026, 10:16 AM
Modified
Oct 30, 2026, 5:17 PM