CVE-2026-91609

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Oracle REST Data Services GraphQL Information Disclosure

Publication date: 2026-10-20

Last updated on: 2026-10-26

Assigner: Oracle

Description

Vulnerability in Oracle REST Data Services (component: Graph QL). Supported versions that are affected are 24.2.0-26.2.1. Easily exploitable vulnerability allows low privileged attacker with network access via HTTP to compromise Oracle REST Data Services. Successful attacks of this vulnerability can result in unauthorized access to critical data or complete access to all Oracle REST Data Services accessible data. CVSS 3.1 Base Score 6.5 (Confidentiality impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N).

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Meta Information

Published

2026-10-20

Last Modified

2026-10-26

Generated

2026-11-10

AI Q&A

2026-10-21

EPSS Evaluated

2026-11-08

NVD

CVE-2026-91609

EUVD

EUVD-2026-106802

Affected Vendors & Products

Vendor	Product	Version / Range
Oracle Corporation	Oracle REST Data Services	24.2.0

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-200	The product exposes sensitive information to an actor that is not explicitly authorized to have access to that information.

Attack-Flow Graph

Executive Summary

This is a vulnerability in Oracle REST Data Services (GraphQL component) affecting versions 24.2.0 to 26.2.1. A low-privileged attacker with network access via HTTP can exploit it to gain unauthorized access to critical data or full access to all accessible data in Oracle REST Data Services.

Detection Guidance

Detection involves checking for vulnerable versions of Oracle REST Data Services (24.2.0-26.2.1). Inspect installed versions via application logs or package managers. Monitor network traffic for unusual GraphQL queries targeting Oracle REST Data Services endpoints.

Impact Analysis

An attacker could steal sensitive data stored in Oracle REST Data Services, leading to data breaches, loss of confidential information, or unauthorized access to critical systems.

Compliance Impact

This vulnerability could lead to unauthorized data access, violating GDPR (data protection) and HIPAA (health data privacy) by exposing sensitive personal or medical information.

Mitigation Strategies

Apply the latest security patches for Oracle REST Data Services versions 24.2.0 to 26.2.1. Restrict network access to HTTP interfaces and enforce least privilege for user accounts. Monitor logs for suspicious GraphQL queries or unauthorized data access attempts.

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