CVE-2026-91355 Vulnerability in the Oracle Outside In Technology product of Oracle Fusion Middleware (component: Outside In Clean Content SDK).

High 8.4 Published Updated
Exploited in the wild
Not known
Fix
None listed

What is CVE-2026-91355?

CVE-2026-91355 is a high-severity vulnerability in Oracle Outside In Technology, published on 20 Oct 2026.

Official description

Vulnerability in the Oracle Outside In Technology product of Oracle Fusion Middleware (component: Outside In Clean Content SDK). The supported version that is affected is 8.5.8. Easily exploitable vulnerability allows unauthenticated attacker with logon to the infrastructure where Oracle Outside In Technology executes to compromise Oracle Outside In Technology. Successful attacks of this vulnerability can result in takeover of Oracle Outside In Technology. CVSS 3.1 Base Score 8.4 (Confidentiality, Integrity and Availability impacts). CVSS Vector: (CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H).

Weakness: CWE-269

Which versions are affected by CVE-2026-91355?

How do I fix CVE-2026-91355?

No fix has been published for CVE-2026-91355 yet. Limit exposure of the affected software until one is available.

Is CVE-2026-91355 being exploited?

There is no known exploitation of CVE-2026-91355 in the wild and no public exploit code.

Sources

Also known as GHSA-c5mh-rwmc-7q5f.

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