Unauthenticated Access Vulnerability in Oracle Fusion Middleware Product
CVE-2026-91353

8.6HIGH

Key Information:

Vendor

Oracle
Status
Oracle Outside In Technology
Vendor
CVE Published:
20 October 2026

What is CVE-2026-91353?

A security flaw in Oracle Outside In Technology, part of Oracle Fusion Middleware, exposes version 8.5.8 to unauthenticated network attacks through HTTP. An attacker can exploit this vulnerability to gain unauthorized access to sensitive data managed by the Oracle Outside In Technology. This lack of proper authentication permits potential threats to escalate, affecting not just the immediate product but potentially allowing unauthorized access to a broader range of data and services reliant on this technology.

Affected Version(s)

Oracle Outside In Technology 8.5.8

References

https://www.oracle.com/security-alerts/cpuoct2026.html
vendor-advisory

CVSS V3.1

Score:
8.6
Severity:
HIGH
Confidentiality:
High
Integrity:
None
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Changed

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.