CVE-2026-91340 Oracle Fusion Middleware Outside In Technology - Remote Code Execution

Oracle Fusion Middleware Outside In Technology 8.5.8 contains a remote code execution vulnerability caused by improper handling in Outside In Clean Content SDK, letting low privileged attackers with network access takeover the system, exploit requires network access via HTTP.

CVSS base score 8.8 /10
High
CISA KEV
Not listed
Public exploit
None known
Authentication
Required
View the NVD record ↗

Details

Type
Remote Code Execution
Impact
Remote Code Execution
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Published
20 October 2026
Updated
21 October 2026

Vendor fix

Update to the latest available version beyond 8.5.8.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

References

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