Java SE Vulnerability in Oracle Products Affecting Sandboxed Applications
CVE-2026-91410

5.3MEDIUM

Key Information:

Vendor

Oracle
Status
Oracle Java Se
Vendor
CVE Published:
20 October 2026

What is CVE-2026-91410?

A vulnerability in Oracle's Java SE and GraalVM products allows unauthenticated attackers with network access to exploit the system via multiple protocols. This weakness is particularly concerning in sandboxed environments where untrusted code is executed, potentially allowing unauthorized actions that can lead to partial denial of service. The vulnerability can be triggered through APIs within the affected components, making it crucial for users to secure their Java deployments.

Affected Version(s)

Oracle Java SE 8u503

Oracle Java SE 8u503-perf

Oracle Java SE 11.0.32.1

References

https://www.oracle.com/security-alerts/cpuoct2026.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

.