CVE-2026-91652 Oracle CVE debrief

Who should care

Defenders responsible for Oracle Essbase deployments, particularly those with version 21.8.3.0.0, should assess exposure and potential impact. This includes verifying exposure, assessing potential unauthorized read access to Oracle Essbase data, and implementing compensating controls to limit access. Security teams and vulnerability management teams should prioritize this vulnerability and review the CVE record and NVD entry for details.

Why it matters

Defenders should prioritize verifying exposure of Oracle Essbase version 21.8.3.0.0 and assessing the impact of potential unauthorized read access to Oracle Essbase data. This vulnerability allows a low-privileged attacker with network access via HTTP to compromise Oracle Essbase, potentially impacting additional products. Successful attacks can result in unauthorized read access to a subset of Oracle Essbase accessible data.

• Potential unauthorized read access to Oracle Essbase data
• Possible impact on additional products due to scope change
• Need to verify exposure of Oracle Essbase version 21.8.3.0.0
• Requirement to assess and implement compensating controls

Technical summary

The vulnerability in Oracle Essbase (component: Security) is easily exploitable and allows a low-privileged attacker with network access via HTTP to compromise Oracle Essbase. Successful attacks can result in unauthorized read access to a subset of Oracle Essbase accessible data. The vulnerability has a CVSS score of 5.0 and vector (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:N/A:N). Defenders should prioritize verifying exposure of Oracle Essbase version 21.8.3.0.0 and assessing the impact of potential unauthorized read access to Oracle Essbase data.

Defensive priority

Defenders should prioritize verifying exposure of Oracle Essbase version 21.8.3.0.0 and assessing the impact of potential unauthorized read access to Oracle Essbase data.

Recommended defensive actions

• Verify exposure of Oracle Essbase version 21.8.3.0.0
• Assess potential impact of unauthorized read access to Oracle Essbase data
• Implement compensating controls to limit access to Oracle Essbase
• Monitor for suspicious activity related to Oracle Essbase
• Review vendor advisory for guidance on remediation
• Perform asset inventory of Oracle Essbase deployments
• Track exceptions and retest remediated assets

Evidence notes

The CVE record and NVD entry provide details on the vulnerability, including its CVSS score of 5.0 and vector (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:N/A:N). The vulnerability is in Oracle Essbase version 21.8.3.0.0. Successful attacks can result in unauthorized read access to a subset of Oracle Essbase accessible data. Defenders should verify exposure and assess potential impact. The CVE Program record and NVD detail page offer source-provided metadata and vulnerability assessment.

Sources and references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.