CVE-2026-91502: High 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 TLS to compromise Oracle WebLogic Server. Successful attacks of this vulnerability can result in unauthorized update, insert or delete access to some of Oracle WebLogic Server accessible data as well as unauthorized read access to a subset of Oracle WebLogic Server accessible data and unauthorized ability to cause a partial denial of service (partial DOS) of Oracle WebLogic Server. CVSS 3.1 Base Score 7.3 (Confidentiality, Integrity and Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L).
Affected Software
Event History
Frequently Asked Questions
Which WebLogic Server versions are affected?
The affected supported versions are 12.2.1.4.0, 14.1.1.0.0, 14.1.2.0.0, and 15.1.1.0.0.
Does an attacker need credentials or user interaction to exploit this issue?
No. The issue is described as easily exploitable by an unauthenticated attacker, and exploitation requires neither privileges nor user interaction.
What network exposure is required for exploitation?
An attacker needs network access to the affected WebLogic Server via TLS. Systems not reachable by an attacker through TLS do not meet the stated attack path.
What could a successful attacker do?
A successful attack can allow unauthorized read access to a subset of accessible data, unauthorized update, insertion, or deletion of some accessible data, and a partial denial of service affecting WebLogic Server.