CVE-2026-21999

Vulnerability in the XML Database component of Oracle Database Server. Supported versions that are affected are 23.4.0-23.26.1. Difficult to exploit vulnerability allows unauthenticated attacker with network access via HTTPS to compromise XML Database. Successful attacks require human interaction from a person other than the attacker. Successful attacks of this vulnerability can result in unauthorized access to critical data or complete access to all XML Database accessible data. CVSS 3.1 Base Score 5.3 (Confidentiality impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:N/A:N).

CVSS v3 5.3 MEDIUM

5.3^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 1.6 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity HIGH

Privileges Required NONE

User Interaction REQUIRED

Confidentiality Impact HIGH

Integrity Impact NONE

Availability Impact NONE

Scope UNCHANGED

References

Link	Resource
https://www.oracle.com/security-alerts/cpuapr2026.html	Patch Vendor Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:oracle:xml_database:*:*:*:*:*:*:*:*

History

26 Oct 2026, 22:10

Type	Values Removed	Values Added
Summary		(es) Vulnerabilidad en el componente de base de datos XML de Oracle Database Server. Versiones compatibles que están afectadas son 23.4.0-23.26.1. Vulnerabilidad difícil de explotar permite a un atacante no autenticado con acceso de red vía HTTPS comprometer la base de datos XML. Ataques exitosos requieren interacción humana de una persona que no sea el atacante. Ataques exitosos de esta vulnerabilidad pueden resultar en acceso no autorizado a datos críticos o acceso completo a todos los datos accesibles de la base de datos XML. Puntuación base CVSS 3.1 5.3 (Impactos en la confidencialidad). Vector CVSS: (CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:N/A:N).

Information

Published : 2026-04-21 21:16

Updated : 2026-10-26 22:10

NVD link : CVE-2026-21999

Mitre link : CVE-2026-21999

CVE.ORG link : CVE-2026-21999

JSON object : View

Products Affected

oracle

xml_database

CWE

CWE-200

Exposure of Sensitive Information to an Unauthorized Actor

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