Networking Vulnerability in Oracle Java SE and GraalVM
CVE-2026-91451

5.3MEDIUM

Key Information:

Vendor

Oracle

Vendor
CVE Published:
20 October 2026

What is CVE-2026-91451?

This vulnerability in Oracle Java SE and GraalVM allows unauthenticated attackers with network access to leverage multiple protocols for exploitation. By interacting with the vulnerable APIs in the Networking component, attackers can gain unauthorized access to sensitive operations, including updates and deletions of accessible data. The attack does not require reliance on untrusted Java Web Start applications or untrusted Java applets but can be executed through standard web services. This vulnerability poses significant risks to the integrity of the affected systems.

Affected Version(s)

Oracle Java SE 8u503

Oracle Java SE 8u503-perf

Oracle Java SE 11.0.32.1

References

CVSS V3.1

Score:
5.3
Severity:
MEDIUM
Confidentiality:
None
Integrity:
Low
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.