---
id: CVE-2026-85985
title: >-
  mariadb: MariaDB: Unauthorized file access via CONNECT engine functions
  (CVE-2026-85985)
summary: >-
  A flaw was found in MariaDB. Certain file-access User-Defined Functions (UDFs)
  within the CONNECT storage engine do not properly enforce user privileges or
  directory restrictions when handling file system paths. An authenticated,
  low-privi…
severity: medium
cvss: 5.4
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N'
cvssSource: vendor
cwe:
  - CWE-552
  - CWE-862
vendor: Red Hat
product: Red Hat Hardened Images
affected:
  - enterprise_linux 10
  - enterprise_linux 7
  - enterprise_linux 8
  - enterprise_linux 9
  - hardened_images
  - openstack_platform_13_queens
patched:
  - hardened_images
published: '2026-10-16'
updated: '2026-10-19'
sourceUpdated: '2026-10-19T11:40:33+00:00'
source: CSAF
sourceUrl: 'https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-85985.json'
references:
  - url: >-
      https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-85985.json
  - url: 'https://access.redhat.com/security/cve/CVE-2026-85985'
  - url: 'https://bugzilla.redhat.com/show_bug.cgi?id=2554196'
  - url: 'https://www.cve.org/CVERecord?id=CVE-2026-85985'
  - url: 'https://nvd.nist.gov/vuln/detail/CVE-2026-85985'
  - url: >-
      https://github.com/MariaDB/server/commit/4f66ca1b69daf1b7e6a562ca8e86d77a6a70abfe
  - url: 'https://github.com/MariaDB/server/releases/tag/mariadb-10.11.19'
  - url: 'https://github.com/MariaDB/server/releases/tag/mariadb-10.6.28'
  - url: 'https://github.com/MariaDB/server/releases/tag/mariadb-11.4.13'
  - url: 'https://github.com/MariaDB/server/releases/tag/mariadb-11.8.9'
  - url: 'https://github.com/MariaDB/server/releases/tag/mariadb-12.3.3'
  - url: 'https://github.com/MariaDB/server/releases/tag/mariadb-13.0.2'
  - url: 'https://github.com/MariaDB/server/security/advisories/GHSA-2245-9hm3-wxf6'
  - url: 'https://jira.mariadb.org/browse/MDEV-40323'
  - url: 'https://access.redhat.com/errata/RHSA-2026:84701'
tags:
  - csaf
  - vex
  - red-hat
  - cve.org
epss: 0.00452
epssPercentile: 0.39054
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-10-16T16:49:34.979927Z'
ingestedAt: '2026-10-16T17:24:46.965Z'
---

## Overview

A flaw was found in MariaDB. Certain file-access User-Defined Functions (UDFs) within the CONNECT storage engine do not properly enforce user privileges or directory restrictions when handling file system paths. An authenticated, low-privileged database user can exploit this vulnerability to read from or write to unauthorized files on the underlying server, subject to the database process's operating system permissions.

## Vendor advisories

- **RHSA-2026:84701** · Red Hat · fixed in: Red Hat Hardened Images · released 2026-10-19 · [advisory](https://access.redhat.com/errata/RHSA-2026:84701)
- **Red Hat VEX** · Moderate · affected: Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 7, Red Hat Enterprise Linux 8, Red Hat Enterprise Linux 9, Red Hat Hardened Images, Red Hat OpenStack Platform 13 (Queens) · no fix planned: Red Hat OpenStack Platform 13 (Queens), Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 7, Red Hat Enterprise Linux 8, … · updated 2026-10-19 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-85985.json)

**mariadb: MariaDB: Unauthorized file access via CONNECT engine functions** — rated Moderate by Red Hat. Released 2026-10-16, updated 2026-10-19.

Affected:

- Red Hat Enterprise Linux 10
- Red Hat Enterprise Linux 7
- Red Hat Enterprise Linux 8
- Red Hat Enterprise Linux 9
- Red Hat Hardened Images
- Red Hat OpenStack Platform 13 (Queens)

Fixed:

- Red Hat Hardened Images

No fix planned:

- Red Hat OpenStack Platform 13 (Queens)
- Red Hat Enterprise Linux 10
- Red Hat Enterprise Linux 7
- Red Hat Enterprise Linux 8
- Red Hat Enterprise Linux 9
- Red Hat Hardened Images

## Remediation

For details on how to apply this update, which includes the changes described in this advisory, refer to:
https://images.redhat.com/ https://access.redhat.com/errata/RHSA-2026:84701