Java SE, JavaFX, and GraalVM Vulnerability in Oracle Products
CVE-2026-91418

5.3MEDIUM

Key Information:

Vendor

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

What is CVE-2026-91418?

A vulnerability exists in Oracle Java SE, JavaFX, and GraalVM products that allows unauthenticated network access, which can be exploited to cause a partial denial of service. Attackers can leverage APIs in the ImageIO component, potentially impacting systems running untrusted Java code from the internet. This vulnerability may affect Java deployments utilizing sandboxing features in 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:
5.3
Severity:
MEDIUM
Confidentiality:
None
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.