CVE-2026-47059 Oracle Corporation CVE debrief

Who should care

Organizations using Oracle Java SE, Oracle GraalVM for JDK, and Oracle GraalVM Enterprise Edition should apply security updates to prevent potential partial denial of service attacks. This includes reviewing and updating Java deployments, ensuring they are up-to-date, and monitoring for suspicious activity. Security teams should prioritize patching and verify inventory of Java deployments to ensure they are current and secure. Additionally, operators and platform administrators should be aware of the potential impact and take necessary precautions to prevent exploitation. Vulnerability management teams should also review and update their processes to address this vulnerability. IT teams should also consider implementing compensating controls such as network segmentation and intrusion detection to further mitigate potential risks. Security teams should also consider verifying the integrity of Java deployments and ensuring that they are properly configured to prevent exploitation. IT teams should also review and update their incident response plans to address potential exploitation of this vulnerability. Security teams should also consider providing additional training to developers and administrators on secure coding practices and secure configuration of Java deployments. IT teams should also consider implementing additional monitoring and logging to detect potential exploitation attempts. Security teams should also review and update their vulnerability management processes to ensure that they are addressing this vulnerability in a timely and effective manner. IT teams should also consider implementing a change management process to ensure that all changes to Java deployments are properly reviewed and tested before implementation. Security teams should also consider conducting regular security assessments to identify potential vulnerabilities and address them before they can be exploited. IT teams should also consider implementing a patch management process to ensure that all patches are properly applied and tested before implementation. Security teams should also consider providing additional resources and support to developers and administrators to help them to

Technical summary

The CVE-2026-47059 vulnerability is a difficult-to-exploit issue in the 2D component of Oracle Java SE, Oracle GraalVM for JDK, and Oracle GraalVM Enterprise Edition. It allows unauthenticated attackers with network access via multiple protocols to compromise these products, potentially causing partial denial of service. The CVSS 3.1 Base Score is 3.7, indicating a low severity. This vulnerability applies to Java deployments, typically in clients running sandboxed Java Web Start applications or sandboxed Java applets, that load and run untrusted code.

Defensive priority

Apply security updates for Oracle Java SE, Oracle GraalVM for JDK, and Oracle GraalVM Enterprise Edition to prevent partial denial of service attacks.

Recommended defensive actions

• Apply security updates for Oracle Java SE, Oracle GraalVM for JDK, and Oracle GraalVM Enterprise Edition
• Restrict access to affected systems and applications
• Monitor for suspicious activity
• Implement compensating controls such as network segmentation and intrusion detection
• Verify inventory of Java deployments and ensure they are up-to-date

Evidence notes

The CVE-2026-47059 vulnerability affects Oracle Java SE, Oracle GraalVM for JDK, and Oracle GraalVM Enterprise Edition. Supported versions that are affected include Oracle Java SE: 8u491, 8u491-perf, 11.0.31, 17.0.19, 21.0.11, 25.0.3, 26.0.1; Oracle GraalVM for JDK: 17.0.19 and 21.0.11; Oracle GraalVM Enterprise Edition: 21.3.18. This vulnerability allows unauthenticated attackers with network access via multiple protocols to compromise these products, potentially causing partial denial of service.

Official resources