Vulnerability in Imperative Web Server Affects Oracle Fusion Middleware
CVE-2026-73920

9.4CRITICAL

Key Information:

Vendor

Oracle
Status
Helidon
Vendor
CVE Published:
18 August 2026

What is CVE-2026-73920?

A vulnerability exists in Oracle's Helidon product, specifically within the Imperative Web Server component. This issue allows an unauthenticated attacker with network access through HTTP to exploit Helidon. The consequences of a successful attack include unauthorized creation, deletion, or modification of critical data, as well as unrestricted access to all data accessible in Helidon. Additionally, this vulnerability could lead to a partial denial of service, impacting the overall availability of Helidon services.

Affected Version(s)

Helidon 4.5.0

References

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

CVSS V3.1

Score:
9.4
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

.