Authentication Bypass Vulnerability in Oracle Fusion Middleware's Outside In Technology
CVE-2026-91355

8.4HIGH

Key Information:

Vendor

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

What is CVE-2026-91355?

A security vulnerability has been identified in Oracle's Outside In Technology, specifically within the Outside In Clean Content SDK of Oracle Fusion Middleware. The issue allows an unauthenticated attacker with logon access to the infrastructure hosting the technology to compromise the system. Exploitation can lead to unauthorized takeover of the Outside In Technology, posing significant risks to confidentiality, integrity, and availability of the impacted system.

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:
8.4
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Local
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.