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CVE-2026-83284 – Unauthenticated SOAP-Based DoS and Unauthorized Data Manipulation – Oracle BI Publi

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Summary

CVE-2026-83284 is a high-severity vulnerability in the BI Platform Security component of Oracle BI Publisher (part of Oracle Analytics). The flaw allows an unauthenticated, remote attacker with network access via SOAP to compromise the application, resulting in unauthorized data disclosure, unauthorized data modification, and denial of service. Oracle rates the issue as "easily exploitable" and disclosed it in the September 2026 Critical Patch Update.

Technical details

  • Root cause: An access control weakness in the BI Platform Security component of Oracle BI Publisher that is reachable through the product’s SOAP interface.
  • Trigger conditions: An attacker sends crafted SOAP requests to an exposed Oracle BI Publisher instance; no authentication or user interaction is required to exploit the flaw.
  • Attack vector: Network-based (AV:N), low attack complexity (AC:L), no privileges required (PR:N), no user interaction (UI:N), scope unchanged (S:U).
  • Impact: Successful exploitation can lead to unauthorized read access to a limited set of accessible data (C:L), unauthorized creation, deletion, or modification of accessible data (I:L), and a complete denial of service of the BI Publisher instance (A:H).

Affected software

  • Oracle BI Publisher 8.2.0.0.0
  • Oracle BI Publisher 12.2.1.4.0
  • Oracle BI Publisher 26.01.0.0.0

Severity

  • CVSS v3.1 Base Score: 8.6 (High)
  • Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H

Mitigation and recommended actions

  • Immediate: Apply the Oracle Critical Patch Update for September 2026, which contains the fix for CVE-2026-83284 for all affected Oracle BI Publisher releases (8.2.0.0.0, 12.2.1.4.0, and 26.01.0.0.0). Oracle strongly recommends applying the patch as soon as possible, as the vulnerability is remotely exploitable without authentication.
  • If immediate patching is not possible: Restrict network exposure of the Oracle BI Publisher SOAP interface to trusted internal networks only, and place the application behind a properly configured firewall or VPN to block unauthenticated internet access until the patch can be applied. Monitor SOAP endpoint traffic for anomalous or malformed requests as an interim detective control.

References

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