---
title: "CVE-2026-114820: Oracle Java SE - Broken Access Control"
description: "Oracle Java SE, Oracle GraalVM for JDK, and Oracle GraalVM Enterprise Edition (affected versions: Oracle Java SE 8u511-b32, 8u511-perf-b32, 11.0.33.0.2, 17.0.21.0.2, 21.0.13.0.2, 25.0.5.0.2, 27.0.1.0.2; Oracle GraalVM for JDK 17.0.21.0.2, 21.0.13.0.2; Oracle GraalVM Enterprise Edition 21.3.20.0.2) contain an unauthorized data access and modification vulnerability caused by insecure API handling in JSSE component, letting unauthenticated network attackers create, delete, or modify critical data, exploit requires network access without authentication."
url: https://panop.io/threat-heartbeat/CVE-2026-114820/
---

# CVE-2026-114820 Oracle Java SE - Broken Access Control

Oracle Java SE, Oracle GraalVM for JDK, and Oracle GraalVM Enterprise Edition (affected versions: Oracle Java SE 8u511-b32, 8u511-perf-b32, 11.0.33.0.2, 17.0.21.0.2, 21.0.13.0.2, 25.0.5.0.2, 27.0.1.0.2; Oracle GraalVM for JDK 17.0.21.0.2, 21.0.13.0.2; Oracle GraalVM Enterprise Edition 21.3.20.0.2) contain an unauthorized data access and modification vulnerability caused by insecure API handling in JSSE component, letting unauthenticated network attackers create, delete, or modify critical data, exploit requires network access without authentication.

CVSS base score 9.1 /10

Critical

CISA KEV

Not listed

Public exploit

Proof of concept available

Authentication

Not required

EPSS

0.25% chance of exploitation in 30 days

[View the NVD record ↗](https://nvd.nist.gov/vuln/detail/CVE-2026-114820)

## Details

Type

Broken Access Control

Impact

Information Disclosure, Data Tampering

CVSS vector

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

Published

24 October 2026

Updated

26 October 2026

Weakness

[CWE-327](https://cwe.mitre.org/data/definitions/327.html)

## Vendor fix

Update to the latest available versions beyond 8u511-b32, 11.0.33.0.2, 17.0.21.0.2, 21.0.13.0.2, 25.0.5.0.2, 27.0.1.0.2, 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-2026-114820](https://nvd.nist.gov/vuln/detail/CVE-2026-114820)
- [https://www.oracle.com/security-alerts/alert-cve-2026-114820.html](https://www.oracle.com/security-alerts/alert-cve-2026-114820.html)

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## 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

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