---
id: CVE-2026-108771
title: 'Apache Kylin: unauthenticated broadcast API and polymorphic deserialization'
summary: "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 a…"
severity: none
cwe:
  - CWE-306
vendor: Apache Software Foundation
product: Apache Kylin
affected:
  - apache_kylin >= 4.0.0 <= 5.0.4
published: '2026-10-19'
updated: '2026-10-19'
sourceUpdated: '2026-10-19T10:11:50.298Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-108771'
references:
  - url: 'https://lists.apache.org/thread.html/d77s7dh3bxf02l4rjbgb6807g605zskx'
tags:
  - cve.org
ingestedAt: '2026-10-19T12:27:23.829Z'
---

## Overview

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.

## Affected

- `apache_kylin >= 4.0.0 <= 5.0.4`

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.