CVE-2026-83320 in BI Publisher
Summary
by MITRE • 09/16/2026
Vulnerability in the Oracle BI Publisher product of Oracle Analytics (component: Administration). 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. Successful attacks require human interaction from a person other than the attacker and 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 7.6 (Confidentiality and Integrity impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:L/UI:R/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 Administration component of Oracle BI Publisher, a core part of the Oracle Analytics suite. This security flaw affects specific supported versions including 8.2.0.0.0, 12.2.1.4.0, and 26.01.0.0.0. The nature of this vulnerability allows for exploitation by an attacker with low privileges who has network access via HTTP to compromise the integrity and confidentiality of the system. While the direct target is Oracle BI Publisher, the successful execution of attacks against this component can lead to a scope change, significantly impacting additional products within the broader Oracle ecosystem due to shared infrastructure or data dependencies.
From a technical perspective, the vulnerability enables unauthorized access to critical data stored within the application. It also grants attackers complete read access to all data accessible through Oracle BI Publisher. Beyond confidentiality breaches, the flaw permits unauthorized modifications to the database, allowing for update, insert, and delete operations on certain datasets managed by the system. This combination of reading sensitive information and altering it represents a severe compromise of both data integrity and availability principles within the application layer. The requirement for human interaction suggests that social engineering or phishing tactics may be employed to trigger the exploit, such as convincing an administrator to perform a specific action in the administration interface while connected via HTTP.
The operational impact is substantial, classified with a CVSS 3.1 Base Score of 7.6, indicating a High severity level. The vector string (CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:L/A:N) highlights that the attack requires network access and low privileges but demands user interaction. The scope change indicates that compromising this single component can lead to broader system compromise, affecting other integrated Oracle services. Confidentiality impact is rated as High due to the potential exposure of critical data, while Integrity impact is Low because although modifications are possible, they may be limited in scope or detectability compared to full control over all data structures. Availability remains unaffected according to this specific vector analysis, though indirect impacts on service stability could occur if malicious deletions disrupt essential configurations.
In terms of industry standards and threat modeling, this vulnerability aligns with CWE-200 Information Exposure and CWE-798 Use of Hard-coded Credentials or Weak Authentication mechanisms depending on the exact trigger mechanism within the administration module. It also maps to MITRE ATT&CK techniques such as T1534 Internal Spearphishing if human interaction is required, and potentially T1078 Valid Accounts if low privilege accounts are leveraged for lateral movement. The scope change aspect relates to S-C in CVSS terms, emphasizing the cascading risk across product boundaries which complicates containment efforts during an incident response scenario.
Mitigation strategies should prioritize immediate patching of all affected Oracle BI Publisher versions to a version that includes the security fix provided by Oracle. Organizations must ensure that administrative interfaces are not exposed directly over unencrypted HTTP connections; instead, they should be secured behind reverse proxies using HTTPS with strong certificate validation to prevent man-in-the-middle attacks and credential interception. Access controls for administration functions should be strictly enforced, limiting access only to verified high-privilege administrators who require it for operational duties. Regular security audits of administrative logs can help detect attempts at exploitation involving human interaction triggers. Additionally, implementing network segmentation to isolate BI Publisher servers from general user networks reduces the attack surface available to low-privileged attackers attempting remote compromise via HTTP protocols.