CVE-2026-91415: Oracle Java SE 2D graphics denial of service and data access

CVE-2026-91415 · Severity: high · CVSS 7 · Published 2026-10-20

Oracle Java SE and GraalVM contain a flaw in their 2D graphics component that allows an attacker to crash applications or access sensitive data through malicious input sent over the network. This vulnerability affects Java deployments including web-based applications, sandboxed applets, and embedded Java runtimes, potentially leading to service disruption or information disclosure.

Technologies: Oracle GraalVM Enterprise Edition, Oracle Graalvm For Jdk, Oracle Java SE. Vendors: Oracle.

Quick answers

Is CVE-2026-91415 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2026-91415 being exploited in the wild.
How severe is CVE-2026-91415?
High severity, with a CVSS score of 7, published 20 October 2026.
Which products and versions are affected?
Oracle GraalVM Enterprise Edition 21.3.19.1.1; Oracle Graalvm For Jdk 17.0.20.1, 21.0.12.1; Oracle Java SE 8u503, 8u503-perf, 11.0.32.1, 17.0.20.1, 21.0.12.1, 25.0.4.1, 27.
Is there a fix for CVE-2026-91415?
No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
How is CVE-2026-91415 attacked?
It is attacked over the network.
Am I affected by CVE-2026-91415?
Check whether you run Oracle GraalVM Enterprise Edition, Oracle Graalvm For Jdk or Oracle Java SE at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

Technical details

A difficult-to-exploit vulnerability in the Java 2D graphics component allows unauthenticated network attackers to cause denial of service (application hang or crash) and gain unauthorized read, insert, update, or delete access to accessible data. The flaw can be exploited via APIs in the 2D component, such as through a web service accepting user-supplied graphics data. This affects standalone Java deployments and sandboxed Java Web Start applications and applets that load untrusted code.

Affected products

  • Oracle Java SE 8u503, 8u503-perf, 11.0.32.1, 17.0.20.1, 21.0.12.1, 25.0.4.1, 27
  • Oracle GraalVM for JDK 17.0.20.1, 21.0.12.1
  • Oracle GraalVM Enterprise Edition 21.3.19.1.1

Timeline

  • 2026-10-20: disclosed

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