Oracle Fusion Middleware Outside In Technology Vulnerability Exposes Critical Flaw

CVE-2026-91458

What is CVE-2026-91458?

A vulnerability within Oracle's Outside In Technology, part of Fusion Middleware, allows unauthenticated attackers with logon access to the execution environment to exploit the system. This vulnerability can lead to the compromise of the Outside In Technology if an attacker successfully prompts user interaction. Such exploitation can result in complete control over the affected service, undermining the confidentiality, integrity, and availability of the system. Organizations using affected versions should take immediate action to mitigate risks associated with this vulnerability.

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