Vulnerability in Oracle Java SE and GraalVM Products
CVE-2026-87294

6.5MEDIUM

Key Information:

Vendor

Oracle
Status
Oracle Java Se
Oracle Graalvm For Jdk
Oracle Graalvm Enterprise Edition
Vendor
CVE Published:
20 October 2026

What is CVE-2026-87294?

This vulnerability in Oracle Java SE and GraalVM allows an unauthenticated attacker with network access to exploit the system via multiple protocols. It poses a risk of unauthorized updates, inserts, or deletions of accessible data. Furthermore, it may enable unauthorized read access, particularly affecting Java deployments running in sandboxed environments. Attackers can exploit this vulnerability using APIs available in specified components, including through web services providing data to these APIs. Systems relying on the Java sandbox for security, such as those executing untrusted code, are particularly vulnerable.

Affected Version(s)

Oracle GraalVM Enterprise Edition 21.3.19.1.1

Oracle GraalVM for JDK 17.0.20.1

Oracle GraalVM for JDK 21.0.12.1

References

https://www.oracle.com/security-alerts/cpuoct2026.html
vendor-advisory

CVSS V3.1

Score:
6.5
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
Low
Availability:
Low
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.