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CVE-2026-70887 – Unauthenticated Data Exposure and Modification – Oracle Hyperion Data Relationship

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Summary

CVE-2026-70887 is a high-severity vulnerability in the access and security component of Oracle Hyperion Data Relationship Management (DRM). It allows an unauthenticated attacker with network access via HTTP to gain unauthorized access to critical data and perform unauthorized modifications, without requiring any user interaction or privileges. Oracle rates this vulnerability 8.2 (HIGH) on the CVSS v3.1 scale and disclosed it as part of its August 2026 Critical Security Patch Update.

Technical details

  • Root cause: A flaw in the access and security (authorization/access-control) component of Oracle Hyperion Data Relationship Management that fails to properly restrict access to protected data and operations.
  • Trigger conditions: Exploitation requires only network access to the affected HTTP-based service; Oracle describes the vulnerability as "easily exploitable" and requiring no authentication or user interaction.
  • Attack vector: Network (AV:N), low attack complexity (AC:L), no privileges required (PR:N), no user interaction (UI:N).
  • Impact: Successful exploitation results in high confidentiality impact — an attacker can gain unauthorized read access to all data accessible through the vulnerable component — combined with low integrity impact, permitting unauthorized update/insert/delete operations on some data. There is no impact to availability.

Affected software

  • Oracle Hyperion Data Relationship Management, version 11.2.25.0.0

Severity

  • CVSS v3.1 Base Score: 8.2 (HIGH)
  • Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N

Mitigation and recommended actions

  • Immediate: Apply the fix provided by Oracle in the August 2026 Critical Security Patch Update for Oracle Hyperion Data Relationship Management. Organizations running the affected 11.2.25.0.0 release should update to the patched version referenced in Oracle’s advisory as soon as possible.
  • If patching cannot be performed immediately: Restrict network access to the Oracle Hyperion Data Relationship Management HTTP interface to trusted internal networks only, and avoid exposing the service directly to the internet, since the vulnerability is remotely exploitable without authentication.
  • Review DRM access logs for anomalous unauthenticated requests as an interim detection measure while patching is scheduled.

References

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