CVE-2026-87419

High

Description

Vulnerability in the Oracle Service Bus product of Oracle Fusion Middleware (component: Core). Supported versions that are affected are 12.2.1.4.0 and 14.1.2.0.0. Easily exploitable vulnerability allows low privileged attacker with network access via HTTP to compromise Oracle Service Bus. Successful attacks of this vulnerability can result in takeover of Oracle Service Bus. CVSS 3.1 Base Score 8.8 (Confidentiality, Integrity and Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H).

SeverityHigh

CVSS8.8

Exploit probability—

ProductOracle Service Bus

PublishedOct 20, 2026

First seenOct 20, 2026

Weakness typeCWE-306Missing authentication for critical function

How to fix

Vendor advisories

oracle.com/security-alerts/cpuoct2026.html

Affected products

Product	Affected versions	Fixed in
Oracle Corporation Oracle Service Bus	12.2.1.4.0, 14.1.2.0.0	—

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