Vulnerability in Helidon Web Server Affects Oracle Fusion Middleware
CVE-2026-73921

9.8CRITICAL

Key Information:

Vendor

Oracle
Status
Helidon
Vendor
CVE Published:
18 August 2026

What is CVE-2026-73921?

A worrying vulnerability exists in the Helidon Web Server, a component of Oracle Fusion Middleware. The affected version, 1.4.20, can be exploited easily by an unauthenticated attacker with network access via HTTP. This vulnerability poses a significant risk as it allows for the potential takeover and compromise of the Helidon server, impacting its confidentiality, integrity, and availability.

Affected Version(s)

Helidon 1.4.20

References

https://www.oracle.com/security-alerts/cspuaug2026.html
vendor-advisory

CVSS V3.1

Score:
9.8
Severity:
CRITICAL
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.