Oracle Java SE Vulnerability Exposes Components to Denial of Service Attacks
CVE-2026-47027

5.3MEDIUM

Key Information:

Vendor

Oracle
Status
Oracle Java Se
Vendor
CVE Published:
21 July 2026

What is CVE-2026-47027?

A flaw in Oracle Java SE and its associated GraalVM environments allows unauthenticated attackers to exploit vulnerabilities via network protocols. This may result in unauthorized partial denial of service attacks. Vulnerable deployments include client systems using sandboxed Java Web Start applications or untrusted Internet-sourced code, relying on the Java sandbox for security. System administrators are urged to review the advisories and implement necessary updates.

Affected Version(s)

Oracle Java SE 8u491

Oracle Java SE 8u491-perf

Oracle Java SE 11.0.31

References

https://www.oracle.com/security-alerts/cpujul2026.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

.