---
id: CVE-2026-83156
title: >-
  Vulnerability in the Oracle XML Developers Kit component of Oracle Database
  Server
summary: >-
  Vulnerability in the Oracle XML Developers Kit component of Oracle Database
  Server.  Supported versions that are affected are 19.3-19.32, 21.3-21.23 and 
  23.4.0-23.26.3. Difficult to exploit vulnerability allows low privileged
  attacker h…
severity: high
cvss: 7.5
cvssVector: 'CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H'
cwe:
  - CWE-284
vendor: Oracle Corporation
product: Oracle Database Server
affected:
  - oracle_database_server >= 19.3 <= 19.32
  - oracle_database_server >= 21.3 <= 21.23
  - oracle_database_server >= 23.4.0 <= 23.26.3
published: '2026-09-15'
updated: '2026-09-17'
sourceUpdated: '2026-09-17T16:18:05.717'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-83156'
references:
  - url: 'https://www.oracle.com/security-alerts/cspusep2026.html'
    label: secalert_us@oracle.com
tags:
  - nvd
  - cve.org
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: total
  timestamp: '2026-09-17T14:56:30.912763Z'
epss: 0.00323
epssPercentile: 0.22575
ingestedAt: '2026-09-15T20:44:02.471Z'
---

## Overview

Vulnerability in the Oracle XML Developers Kit component of Oracle Database Server.  Supported versions that are affected are 19.3-19.32, 21.3-21.23 and  23.4.0-23.26.3. Difficult to exploit vulnerability allows low privileged attacker having XDKC privilege with network access via Oracle Net to compromise Oracle XML Developers Kit.  Successful attacks of this vulnerability can result in takeover of Oracle XML Developers Kit. CVSS 3.1 Base Score 7.5 (Confidentiality, Integrity and Availability impacts).  CVSS Vector: (CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H).

## Remediation

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