---
title: "CVE-2026-91415: Oracle Java SE - Denial of Service & Data Integrity & Confidentiality"
description: "Oracle Java SE, Oracle GraalVM for JDK, and Oracle GraalVM Enterprise Edition (affected versions: Java SE 8u503, 8u503-perf, 11.0.32.1, 17.0.20.1, 21.0.12.1, 25.0.4.1, 27; GraalVM for JDK 17.0.20.1, 21.0.12.1; GraalVM Enterprise Edition 21.3.19.1.1) contain a denial of service and data integrity and confidentiality vulnerability caused by improper handling in 2D component APIs, letting unauthenticated network attackers cause crashes and unauthorized read/write access, exploit requires network access with high attack complexity."
url: https://panop.io/threat-heartbeat/CVE-2026-91415/
---

# CVE-2026-91415 Oracle Java SE - Denial of Service & Data Integrity & Confidentiality

Oracle Java SE, Oracle GraalVM for JDK, and Oracle GraalVM Enterprise Edition (affected versions: Java SE 8u503, 8u503-perf, 11.0.32.1, 17.0.20.1, 21.0.12.1, 25.0.4.1, 27; GraalVM for JDK 17.0.20.1, 21.0.12.1; GraalVM Enterprise Edition 21.3.19.1.1) contain a denial of service and data integrity and confidentiality vulnerability caused by improper handling in 2D component APIs, letting unauthenticated network attackers cause crashes and unauthorized read/write access, exploit requires network access with high attack complexity.

CVSS base score 7.0 /10

High

CISA KEV

Not listed

Public exploit

None known

Authentication

Not required

[View the NVD record ↗](https://nvd.nist.gov/vuln/detail/CVE-2026-91415)

## Details

Type

Denial of Service

Impact

Denial Of Service, Information Disclosure, Data Tampering

CVSS vector

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:H

Published

20 October 2026

Updated

21 October 2026

## Vendor fix

Update to the latest available version beyond 8u503, 11.0.32.1, 17.0.20.1, 21.0.12.1, 25.0.4.1, 27, or corresponding GraalVM versions.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

## References

- [https://nvd.nist.gov/vuln/detail/CVE-2026-91415](https://nvd.nist.gov/vuln/detail/CVE-2026-91415)
- [https://www.oracle.com/security-alerts/cpuoct2026.html](https://www.oracle.com/security-alerts/cpuoct2026.html)

[← All CVEs](https://panop.io/threat-heartbeat/)

## What this record can't tell you

- Whether you run the affected software, and where
- Whether an attacker can actually reach and exploit it
- The misconfigurations that never get a CVE number
- What it would cost the business, ranked into what to fix first

Panop answers these inside your environment, for this CVE and every other finding.

[Book a demo](https://panop.io/demo)