CVE-2026-91323 vulnerability in Oracle Products
Published on October 20, 2026
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).
Vulnerability Analysis
CVE-2026-91323 can be exploited with network access, and does not require authorization privileges or user interaction. This vulnerability is considered to have a low attack complexity. The potential impact of an exploit of this vulnerability is considered to be critical as this vulnerability has a high impact to the confidentiality, integrity and availability of this component.
Weakness Types
Missing Authentication for Critical Function
The software does not perform any authentication for functionality that requires a provable user identity or consumes a significant amount of resources.
What is an authentification Vulnerability?
When an actor claims to have a given identity, the software does not prove or insufficiently proves that the claim is correct.
CVE-2026-91323 has been classified to as an authentification vulnerability or weakness.
Products Associated with CVE-2026-91323
stack.watch emails you whenever new vulnerabilities are published in Oracle or Oracle Weblogic Server. Just hit a watch button to start following.
Affected Versions
Oracle Corporation Oracle WebLogic Server:- Version 12.2.1.4.0 is affected.
- Version 14.1.1.0.0 is affected.
- Version 14.1.2.0.0 is affected.
- Version 15.1.1.0.0 is affected.