---
id: "CVE-2026-108764"
kind: "vulnerability"
aliases: ["CVE-2026-108764"]
title: "Apache Kylin: SSRF in job service lets attackers reach internal systems"
severity: "medium"
cvss: null
epss: null
exploited: false
status: "open"
category: "package"
products: []
ecosystems: []
tags: ["apache-kylin", "java", "package", "self-hosted"]
not_affected_if: ["internal-network-only", "version-outside-4.0.0-to-5.0.4"]
published_at: "2026-10-19T10:16:44+00:00"
first_seen_at: "2026-10-23T21:57:17+00:00"
updated_at: "2026-10-25T05:12:41+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-108764", "first_seen_at": "2026-10-23T21:57:17+00:00"}]
---

# Apache Kylin: SSRF in job service lets attackers reach internal systems

Apache Kylin versions 4.0.0 through 5.0.4 contain a server-side request forgery flaw in the job service. An attacker who can reach the job service can make the server send requests to internal or other destinations it chooses.

_Summary, check and fix written by a model from the sources; labelled as such._

## How to check

- Check the installed Kylin version and confirm whether it falls in `4.0.0` through `5.0.4`.
- Check whether the Kylin job service port is reachable from the public network.

## Fix

- Upgrade Apache Kylin to `5.0.5`.
- Until upgraded, restrict network access to the Kylin job service so it is not publicly exposed.

## Timeline

- 2026-10-23T21:57:17+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-108764

## From the sources

Server-Side request forgery (SSRF) vulnerability in Apache Kylin. Impact most to the kylin job service 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.

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_Free to read at a human pace. An API with keys and an MCP server are in preparation; early access: hello@infrastack.ai_