---
id: "CVE-2026-108762"
kind: "vulnerability"
aliases: ["CVE-2026-108762"]
title: "Apache Kylin: metadata backup deletion can escape its directory"
severity: "unknown"
cvss: null
epss: null
exploited: false
status: "open"
category: "package"
products: []
ecosystems: []
tags: ["apache-kylin", "big-data", "package", "self-hosted"]
not_affected_if: ["in-house-deployment", "not-public-facing"]
published_at: "2026-10-19T10:16:44+00:00"
first_seen_at: "2026-10-23T21:57:17+00:00"
updated_at: "2026-10-25T05:12:44+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-108762", "first_seen_at": "2026-10-23T21:57:17+00:00"}]
---

# Apache Kylin: metadata backup deletion can escape its directory

Apache Kylin's metadata backup deletion does not properly confine paths, so a crafted request can delete files outside the intended backup location. The advisory says the impact is mainly for Kylin services directly exposed to the public network.

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

## How to check

- Check the installed Kylin version, for example by looking at the release in the deployment or package manifest; versions 4.0.0 through 5.0.4 are affected.
- Check whether the Kylin service is reachable from the public internet (`unknown` for specific commands in the sources).

## Fix

- Upgrade Apache Kylin to `5.0.5`, which fixes the issue.

## Timeline

- 2026-10-23T21:57:17+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-108762

## From the sources

Path-confinement bypass during metadata backup deletion 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.

---

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