CVE-2026-21999

MediumCVSS 5.3

Published: 21/04/2026(UTC)Updated: 08/07/2026(UTC)Translated: 09/07/2026(UTC)NVD NIST

Exploitation Probability (EPSS)

Low risk

0.24%

15th percentile - higher than 15% of all known CVEs

Summary

Vulnerability in the XML Database component of Oracle Database Server allows an unauthenticated attacker remote access via HTTPS to confidential data. It requires user interaction and is difficult to exploit.

Risk Assessment

The risk involves unauthorized access to critical data stored in the XML database, potentially leading to information disclosure.

Recommendation

Apply patches provided by Oracle for versions 23.4.0-23.26.1 immediately and restrict network access to the database server.

Original NVD description (English source)

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).