CVE-2026-83378

Vulnerability in Oracle Java SE (component: Compiler). Supported versions that are affected are Oracle Java SE: 21.0.12.1, 25.0.4.1 and 27. Difficult to exploit vulnerability allows unauthenticated attacker with network access via multiple protocols to compromise Oracle Java SE. Successful attacks of this vulnerability can result in unauthorized update, insert or delete access to some of Oracle Java SE accessible data as well as unauthorized read access to a subset of Oracle Java SE accessible data. Note: This vulnerability can only be exploited by supplying data to APIs in the specified Component without using Untrusted Java Web Start applications or Untrusted Java applets, such as through a web service. CVSS 3.1 Base Score 4.8 (Confidentiality and Integrity impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N).

• https://www.oracle.com/security-alerts/cpuoct2026.html

Published

Oct 20, 2026

Last Modified

Oct 21, 2026

Status

Awaiting Analysis

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
• Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
• PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
• AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.

• CVE-2026-83372Vulnerability in the PeopleSoft Enterprise PeopleTools produ…5.4
• CVE-2026-83373Vulnerability in the PeopleSoft Enterprise PeopleTools produ…3
• CVE-2026-83374Vulnerability in the Oracle Java SE, Oracle GraalVM for JDK,…5.9
• CVE-2026-83375Vulnerability in the PeopleSoft Enterprise HCM Human Resourc…6
• CVE-2026-83376Vulnerability in the Oracle Java SE, Oracle GraalVM for JDK,…3.7
• CVE-2026-83377Vulnerability in the Oracle HRMS (US) product of Oracle E-Bu…5.4
• CVE-2026-83379Vulnerability in the Oracle Weblogic Server Proxy Plug-in pr…8.7
• CVE-2026-8338A Spring Security authentication and authorization bypass ex…9.2
• CVE-2026-83380Vulnerability in the Oracle Java SE, Oracle GraalVM for JDK,…5.3
• CVE-2026-83381Vulnerability in Oracle Java SE (component: Security). Supp…4.8
• CVE-2026-83382Vulnerability in the Oracle Report Manager product of Oracle…4.3
• CVE-2026-83383Vulnerability in the Oracle HRMS (US) product of Oracle E-Bu…6.5