CVE-2026-91346 Oracle Corporation CVE debrief

Who should care

Defenders responsible for Oracle Outside In Technology deployments should assess exposure and apply patches or updates. Security teams should monitor for suspicious activity related to the vulnerability.

Why it matters

CVE-2026-91346 is a high-severity vulnerability in Oracle Outside In Technology that allows unauthenticated attackers to compromise the product via HTTP. Defenders should assess exposure, apply patches, and monitor for suspicious activity. The vulnerability requires human interaction and can result in unauthorized access to critical data or complete access to all Oracle Outside In Technology accessible data, as well as unauthorized update, insert, or delete access to some data. Evidence from official sources is limited, and further verification is required to determine the full scope of the vulnerability.

• Potential unauthorized access to critical data
• Possible complete access to all Oracle Outside In Technology accessible data
• Unauthorized update, insert, or delete access to some data
• Requires verification of human interaction requirements to prevent exploitation

Technical summary

The vulnerability in Oracle Outside In Technology has a CVSS score of 8.2 and allows unauthenticated attackers to compromise the product via HTTP. Successful attacks require human interaction and can result in unauthorized access to critical data or complete access to all Oracle Outside In Technology accessible data, as well as unauthorized update, insert, or delete access to some data. The vulnerability affects Oracle Outside In Technology version 8.5.8 and has a high severity impact. Defenders should assess exposure, apply patches, and monitor for suspicious activity related to the vulnerability.

Defensive priority

High priority for defenders to assess exposure and apply patches

Recommended defensive actions

• Assess exposure of Oracle Outside In Technology in your environment
• Apply patches or updates provided by Oracle
• Monitor for suspicious activity related to the vulnerability
• Verify that human interaction requirements are met to prevent exploitation
• Review compensating controls for exposed systems while remediation is scheduled and verified
• Check relevant monitoring, detection, and logs for exposed assets that need extra review
• Track exceptions, retest remediated assets, and close the item only after evidence is documented

Evidence notes

The CVE record and NVD detail page provide information on the vulnerability, its impacts, and affected products. Oracle's security alert page also provides relevant details. Evidence from official sources is limited, and further verification is required to determine the full scope of the vulnerability. Defenders should verify the affected product deployments, assess exposure, and apply patches or updates. The vulnerability requires human interaction and can result in unauthorized access to critical data or complete access to all data

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.