Networking Vulnerability in Oracle Java SE and GraalVM Products
CVE-2026-91452

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-2026-91452?

An unauthenticated networking vulnerability in Oracle Java SE and GraalVM products allows attackers with network access to compromise sensitive components easily. This vulnerability can be exploited through APIs without requiring untrusted Java Web Start applications or applets, posing a risk of unauthorized data manipulation. It is essential for users of affected versions to apply the recommended mitigations to prevent potential data integrity breaches.

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:
None
Integrity:
Low
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.