CVE-2026-101382 in REST Data Services
Summary
by MITRE • 10/21/2026
Vulnerability in Oracle REST Data Services (component: Core). Supported versions that are affected are 24.2.0-26.1.0. Difficult to exploit 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 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. CVSS 3.1 Base Score 4.2 (Confidentiality and Integrity impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:N).
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Analysis
by VulDB Data Team • 10/21/2026
The identified vulnerability resides within the Core component of Oracle REST Data Services, specifically affecting supported versions ranging from 24.2.0 through 26.1.0. This flaw represents a significant security concern for organizations relying on this middleware to expose database objects and procedures via RESTful APIs. The nature of the defect allows an attacker with low privileges who possesses network access over HTTP to compromise the integrity and confidentiality of the service. Although the vulnerability is classified as difficult to exploit, its existence in a core component means that any successful exploitation can lead to substantial data breaches or unauthorized modifications within the scope of accessible Oracle REST Data Services resources.
From a technical perspective, this issue aligns with CWE-269, which addresses Improper Privilege Management, and potentially CWE-862, Missing Authorization, depending on the specific implementation details of how access controls are enforced during request processing. The vulnerability enables an attacker to perform unauthorized operations such as updates, inserts, or deletes against data that should be restricted based on user roles. Additionally, it permits unauthorized read access to a subset of accessible data, indicating a failure in enforcing strict separation between different privilege levels. This suggests that the application logic fails to adequately validate whether a low-privileged user has sufficient rights to execute specific actions or view sensitive information, allowing for horizontal privilege escalation within the context of the REST API endpoints.
The operational impact is quantified by a CVSS 3.1 Base Score of 4.2, reflecting moderate severity due to the combination of confidentiality and integrity impacts without affecting availability. The vector string (CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:N) indicates that while the attack requires high complexity and low privileges, it can be executed remotely over a network with no user interaction required. This profile places the vulnerability within the MITRE ATT&CK framework under techniques related to Privilege Escalation and Data Exfiltration, specifically mapping to T1078 Valid Accounts if the attacker leverages compromised credentials or T1530 Data from Cloud Storage Object if the data is accessed via cloud-based storage interfaces exposed through ORDS. The lack of availability impact suggests that service disruption is not a primary concern with this specific flaw, but rather the silent compromise of data integrity and confidentiality.
Mitigation strategies must focus on immediate patching to the latest available version of Oracle REST Data Services released by Oracle after the disclosure date for this vulnerability. Organizations should also implement strict network segmentation to limit HTTP access to ORDS instances only from trusted subnets or through a secure reverse proxy with additional authentication layers. Enforcing HTTPS instead of plain HTTP is critical, as it prevents eavesdropping and man-in-the-middle attacks that could facilitate exploitation even if the underlying logic flaw exists. Furthermore, applying principle of least privilege principles to database accounts used by ORDS ensures that even if an attacker exploits this vulnerability, their ability to modify or read data remains constrained by the minimal permissions assigned to the service account. Regular auditing of access logs and implementing Web Application Firewalls with rules tailored to detect anomalous REST API behavior can provide additional defense-in-depth against exploitation attempts.