Vulnerability in Oracle Java SE and GraalVM Products
CVE-2026-91395

6.5MEDIUM

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-2026-91395?

A vulnerability exists in Oracle Java SE, GraalVM for JDK, and GraalVM Enterprise Edition, which allows an unauthenticated attacker with network access to compromise the affected products. Exploitation may result in unauthorized modifications, including updates, inserts, or deletions to accessible data, and could also lead to a partial denial of service. This vulnerability affects Java deployments and may be exploited through APIs in the specified component, especially when running untrusted code in sandboxed environments such as Java Web Start applications or applets.

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:
6.5
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

.