CVE-2026-101376 in REST Data Services
Summary
by MITRE • 10/21/2026
Vulnerability in Oracle REST Data Services (component: Database Actions). Supported versions that are affected are 24.2.0-26.1.0. Easily exploitable vulnerability allows high privileged attacker with network access via HTTP to compromise Oracle REST Data Services. Successful attacks of this vulnerability can result in unauthorized update, insert or delete access to some of Oracle REST Data Services accessible data as well as unauthorized read access to a subset of Oracle REST Data Services accessible data and unauthorized ability to cause a partial denial of service (partial DOS) of Oracle REST Data Services. CVSS 3.1 Base Score 4.7 (Confidentiality, Integrity and Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:L).
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Analysis
by VulDB Data Team • 10/21/2026
The identified vulnerability resides within the Database Actions component of Oracle REST Data Services, specifically affecting supported versions ranging from 24.2.0 through 26.1.0. This security flaw presents a significant risk to organizations relying on this platform for database management and interaction via web services. The core issue stems from insufficient access control mechanisms or improper validation within the HTTP handling routines of the Database Actions interface, which allows an attacker with high privileges and network connectivity to manipulate data integrity and availability in ways that were not intended by the system administrators.
From a technical perspective, this vulnerability is characterized as easily exploitable due to its low complexity requirements for attack execution. An adversary must possess valid high-level credentials within the Oracle REST Data Services environment and have network access to the HTTP interface serving the Database Actions component. Once these prerequisites are met, the attacker can craft specific requests that bypass standard authorization checks or exploit logic errors in how data modification commands are processed. This aligns with common vulnerability classifications such as CWE-269 Improper Privilege Management or CWE-862 Missing Authorization, where the system fails to enforce proper restrictions on authenticated users who should not have access to certain operations or data sets.
The operational impact of this vulnerability is multifaceted, affecting confidentiality, integrity, and availability as reflected in its CVSS 3.1 base score of 4.7. On the integrity front, successful exploitation permits unauthorized updates, inserts, or deletes against accessible data within Oracle REST Data Services. This means an attacker could alter critical database records, introduce malicious entries, or remove essential information without detection by standard audit logs if logging is not sufficiently granular. Regarding confidentiality, the flaw grants unauthorized read access to a subset of data that should remain restricted, potentially exposing sensitive organizational information such as customer details, financial records, or proprietary intellectual property stored within the managed databases.
Furthermore, the vulnerability impacts availability through the ability to cause a partial denial of service. By sending malformed or resource-intensive requests via HTTP, an attacker can consume excessive server resources, leading to performance degradation or temporary unavailability of specific Database Actions features for legitimate users. This aspect maps closely to ATT&CK technique T1498 Network Denial of Service, where the goal is not necessarily to crash the entire system but to disrupt critical services and hinder operational continuity. The partial nature of the denial suggests that while core database functions might remain online, the web-based management interface becomes unreliable or unresponsive under attack conditions.
Mitigation strategies must focus on immediate patching and access control hardening. Organizations running affected versions should apply the latest security patches provided by Oracle to address these specific flaws in the Database Actions component. In addition to updating software, it is crucial to enforce strict network segmentation policies that limit HTTP access to the REST Data Services interface only from trusted management networks or through secure VPN tunnels. Implementing Web Application Firewalls with rules tailored to detect anomalous request patterns associated with privilege escalation or data exfiltration can provide an additional layer of defense. Regular auditing of user privileges ensures that high-privileged accounts are used strictly for administrative tasks and not exposed via network-accessible interfaces unless absolutely necessary, thereby reducing the attack surface available to potential adversaries.