CVE-2026-91323: Critical severity Oracle WebLogic Server vulnerability
Vulnerability in the Oracle WebLogic Server product of Oracle Fusion Middleware (component: Core). Supported versions that are affected are 12.2.1.4.0, 14.1.1.0.0, 14.1.2.0.0 and 15.1.1.0.0. Easily exploitable vulnerability allows unauthenticated attacker with network access via HTTP to compromise Oracle WebLogic Server. Successful attacks of this vulnerability can result in takeover of Oracle WebLogic Server. CVSS 3.1 Base Score 9.8 (Confidentiality, Integrity and Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H).
Affected Software
Event History
Frequently Asked Questions
What does an attacker need to exploit this issue?
The CVSS vector indicates exploitation can be performed over the network with low attack complexity. It requires no privileges and no user interaction.
What could successful exploitation allow?
The listed impact is high for confidentiality, integrity, and availability. A successful attack could therefore result in substantial disclosure, modification, and disruption of affected systems.