CVE-2026-83267 in BI Publisher
Summary
by MITRE • 09/16/2026
Vulnerability in the Oracle BI Publisher product of Oracle Analytics (component: BI Publisher Security). Supported versions that are affected are 8.2.0.0.0, 12.2.1.4.0 and 26.01.0.0.0. Easily exploitable vulnerability allows low privileged attacker with network access via HTTP to compromise Oracle BI Publisher. While the vulnerability is in Oracle BI Publisher, attacks may significantly impact additional products (scope change). Successful attacks of this vulnerability can result in unauthorized access to critical data or complete access to all Oracle BI Publisher accessible data as well as unauthorized update, insert or delete access to some of Oracle BI Publisher accessible data. CVSS 3.1 Base Score 8.5 (Confidentiality and Integrity impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:L/A:N).
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Analysis
by VulDB Data Team • 09/16/2026
The identified vulnerability resides within the BI Publisher Security component of Oracle Analytics, specifically affecting supported versions including 8.2.0.0.0, 12.2.1.4.0, and 26.01.0.0.0. This flaw represents a critical security deficiency that allows for unauthorized manipulation or exfiltration of data managed by the BI Publisher service. The nature of this vulnerability is particularly concerning because it can be exploited remotely over HTTP without requiring user interaction, significantly lowering the barrier to entry for potential attackers who possess network access and low-level privileges within the target environment.
From a technical perspective, the core issue stems from insufficient validation or authorization checks within the BI Publisher security module. This architectural weakness enables an attacker with basic authenticated credentials to bypass intended restrictions on data access and modification operations. The vulnerability facilitates both read and write attacks, meaning that beyond merely viewing sensitive information, an adversary can also alter, insert new records into, or delete existing entries in the database accessible through Oracle BI Publisher. This dual capability for confidentiality and integrity breaches underscores the severity of the flaw, as it compromises not only the secrecy but also the accuracy and reliability of the organizational data stored within the system.
The operational impact of this vulnerability extends beyond the immediate scope of Oracle BI Publisher due to a phenomenon known as scope change or privilege escalation across product boundaries. While the technical root cause is located in BI Publisher, successful exploitation can lead to significant impacts on additional connected products within the Oracle Analytics ecosystem. This lateral movement capability means that compromising one component can serve as a foothold for attacking other integrated services, thereby amplifying the overall risk profile for organizations relying on these interconnected analytics tools. The ability to perform unauthorized updates and deletions poses a direct threat to business continuity and data integrity, potentially leading to corrupted reports, misleading analytics, or complete loss of critical historical records.
In terms of industry-standard classification frameworks, this vulnerability aligns with CWE-269 Improper Privilege Management and CWE-862 Missing Authorization, as it allows low-privileged users to perform actions reserved for higher-level administrators. Furthermore, the exploitation vector corresponds to MITRE ATT&CK techniques such as T1078 Valid Accounts, where attackers use legitimate credentials to gain access, and potentially T1530 Data from Cloud Storage or T1486 Data Encrypted for Impact if the data manipulation leads to destructive outcomes. The CVSS 3.1 base score of 8.5 reflects a High severity rating, driven by the Network Attack Vector (AV:N), Low Complexity (AC:L), and High Confidentiality impact (C:H) alongside Moderate Integrity impact (I:L).
To mitigate this risk, organizations must immediately apply the latest security patches provided by Oracle for their specific version of BI Publisher. It is crucial to verify that all supported versions are updated to a state where these authorization checks have been hardened. Additionally, implementing strict network segmentation can limit exposure by ensuring that only authorized systems and users can access the HTTP endpoints associated with BI Publisher services. Enforcing multi-factor authentication and adhering to the principle of least privilege for user accounts will further reduce the attack surface, making it significantly more difficult for low-privileged attackers to leverage this vulnerability even if they gain initial network access. Regular auditing of administrative actions and monitoring for anomalous data modification patterns can also aid in early detection of exploitation attempts.