---
id: CVE-2025-66518
title: >-
  Any client who can access to Apache Kyuubi Server via Kyuubi frontend
  protocols can bypass server-side config kyuubi.session.local.dir.allow.list
  and use local files which are not listed in the config.


  This issue affects Apache Kyuubi: …
summary: >-
  Any client who can access to Apache Kyuubi Server via Kyuubi frontend
  protocols can bypass server-side config kyuubi.session.local.dir.allow.list
  and use local files which are not listed in the config.


  This issue affects Apache Kyuubi: …
severity: high
cvss: 8.8
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H'
cwe:
  - CWE-27
  - CWE-22
vendor: apache
product: kyuubi
affected:
  - 'kyuubi >= 1.6.0, < 1.10.3'
patched:
  - kyuubi 1.10.3
published: '2026-01-05'
updated: '2026-09-30'
sourceUpdated: '2026-09-30T23:10:00.237'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2025-66518'
references:
  - url: 'https://lists.apache.org/thread/xp460bwbyzdhho34ljd4nchyt2fmhodl'
    label: security@apache.org
  - url: 'http://www.openwall.com/lists/oss-security/2026/01/05/1'
    label: af854a3a-2127-422b-91ae-364da2661108
tags:
  - nvd
epss: 0.0106
epssPercentile: 0.63242
ingestedAt: '2026-09-30T23:29:32.535Z'
---

## Overview

Any client who can access to Apache Kyuubi Server via Kyuubi frontend protocols can bypass server-side config kyuubi.session.local.dir.allow.list and use local files which are not listed in the config.

This issue affects Apache Kyuubi: from 1.6.0 through 1.10.2.

Users are recommended to upgrade to version 1.10.3 or upper, which fixes the issue.

## Affected

- `kyuubi >= 1.6.0, < 1.10.3`

## Remediation

Upgrade past the affected range:

- `kyuubi 1.10.3`