CVE-2026-83303 in BI Publisher
Summary
by MITRE • 09/16/2026
Vulnerability in the Oracle BI Publisher product of Oracle Analytics (component: BI Platform 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 SOAP 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 creation, deletion or modification access to critical data or all Oracle BI Publisher accessible data as well as unauthorized read access to a subset 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:L/I:H/A:N).
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Analysis
by VulDB Data Team • 09/16/2026
The identified vulnerability resides within the BI Platform Security component of Oracle Analytics, specifically affecting the Oracle BI Publisher product across supported versions including 8.2.0.0.0, 12.2.1.4.0, and 26.01.0.0. This security flaw represents a critical weakness in how the application handles authentication and authorization checks for SOAP-based requests. The vulnerability is characterized by an easily exploitable condition that allows attackers with low privileges to bypass intended access controls. Because the attack vector requires network access via SOAP, it can be leveraged remotely over standard web protocols without requiring user interaction or complex social engineering tactics. This accessibility significantly increases the risk profile of the affected systems in enterprise environments where BI Publisher services are exposed to internal networks or potentially external interfaces.
The technical nature of this flaw involves a failure to properly enforce security constraints on specific SOAP API endpoints, leading to an authorization bypass that falls under CWE-269 Improper Privilege Management and CWE-862 Missing Authorization. An attacker who has obtained low-level credentials can manipulate these requests to perform actions beyond their assigned role permissions. The impact of this vulnerability extends beyond the immediate BI Publisher module due to a scope change in how Oracle evaluates the attack surface. While the root cause is localized within BI Publisher, successful exploitation allows for unauthorized creation, deletion, or modification of critical data and all accessible data within the BI Publisher environment. Furthermore, it grants unauthorized read access to subsets of this sensitive information. This capability effectively transforms a low-privilege account into one with significant administrative-like capabilities over reporting assets, datasets, and configurations.
From an operational perspective, the consequences of exploiting this vulnerability are severe for organizational integrity and confidentiality. The ability to modify or delete critical data undermines the reliability of business intelligence reports, potentially leading to flawed decision-making processes based on corrupted outputs. Conversely, unauthorized read access exposes proprietary metrics, financial forecasts, customer lists, and other sensitive corporate information to potential exfiltration by malicious actors. This aligns with ATT&CK techniques such as T1078 Valid Accounts for initial foothold maintenance and T1530 Data from Cloud Storage or local data staging if the attacker moves laterally after gaining access. The high confidentiality impact combined with significant integrity impacts results in a CVSS 3.1 Base Score of 8.5, indicating a critical severity level that demands immediate attention.
Mitigation strategies must prioritize both technical remediation and architectural adjustments to reduce exposure. Oracle has released patches for the affected versions which should be applied as soon as possible through official update channels. In addition to patching, organizations should implement strict network segmentation policies to restrict SOAP traffic from untrusted networks or users who do not require direct API access. Implementing Web Application Firewalls with specific rulesets designed to detect anomalous SOAP request patterns can provide an additional layer of defense against exploitation attempts. Furthermore, enforcing the principle of least privilege ensures that even if credentials are compromised, the potential blast radius is limited by restricting user roles to only those permissions absolutely necessary for their job functions. Regular auditing of access logs and monitoring for unusual data modification or retrieval activities will aid in early detection of any attempted exploits leveraging this vulnerability.