Unauthenticated Access Vulnerability in Oracle Java SE and GraalVM Products
CVE-2026-91464

5.3MEDIUM

Key Information:

Vendor

Oracle
Status
Oracle Java Se
Oracle Graalvm For Jdk
Oracle Graalvm Enterprise Edition
Vendor
CVE Published:
20 October 2026

What is CVE-2026-91464?

This vulnerability allows an unauthenticated attacker with network access to compromise Oracle Java SE and GraalVM products through various protocols. Successful exploitation requires human interaction from someone other than the attacker, which could lead to unauthorized access to sensitive data. It primarily affects Java deployments that execute untrusted code via sandboxed Java Web Start applications or applets. This vulnerability does not affect Java deployments that handle trusted code typically found in server environments.

Affected Version(s)

Oracle GraalVM Enterprise Edition 21.3.19.1.1

Oracle GraalVM for JDK 17.0.20.1

Oracle GraalVM for JDK 21.0.12.1

References

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

CVSS V3.1

Score:
5.3
Severity:
MEDIUM
Confidentiality:
High
Integrity:
None
Availability:
High
Attack Vector:
Network
Attack Complexity:
High
Privileges Required:
None
User Interaction:
Required
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.