CVE-2026-73939
HighCVSS 8.6Exploitation Probability (EPSS)
Low risk25th percentile - higher than 25% of all known CVEs
Summary
Vulnerability in Oracle Fusion Middleware Helidon (Imperative Web Server) versions 3.0.0-3.2.19. An unauthenticated attacker via HTTP can gain unauthorized access to critical data and the ability to create, delete, or modify it, with potential impact on additional products.
Risk Assessment
The attack can lead to data integrity breaches, and due to scope change, may affect other systems, increasing risk.
Recommendation
Apply Oracle patches or restrict network access to the server.
Other vulnerabilities in Helidon
See all- CVE-2026-73930Critical
Vulnerability in Oracle Fusion Middleware Helidon (Imperative Web Server component) affects versions 3.0.0-3.2.19 and 4.0.0-4.5.2. Easily exploitable flaw allows unauthenticated attacker with network access via HTTP to perform unauthorized creation, deletion, or modification of data, unauthorized read access to a subset of data, and cause partial denial of service. Attacks may impact additional products (scope change). CVSS score 9.9.
- CVE-2026-73924Critical
Vulnerability in Oracle Fusion Middleware Helidon (Imperative Web Server) versions 1.0.0-1.4.18. Allows unauthenticated attacker via HTTP to perform unauthorized creation, deletion, or modification of data and access data. CVSS 9.1.
- CVE-2026-73922Critical
Vulnerability in Oracle Fusion Middleware Helidon (Imperative Web Server) versions 1.0.0-1.4.18. Allows unauthenticated attacker via HTTP to perform unauthorized creation, deletion, or modification of data and access data. CVSS 9.1.
- CVE-2026-73921Critical
Vulnerability in Oracle Fusion Middleware Helidon (Imperative Web Server component) affects versions 1.0.0-1.4.19. Easily exploitable flaw allows unauthenticated attacker with network access via HTTP to take over Helidon. CVSS score 9.8.
- CVE-2026-73920Critical
Vulnerability in Oracle Fusion Middleware Helidon (Imperative Web Server) versions 4.0.0-4.4.1. Allows unauthenticated attacker via HTTP to perform unauthorized creation, deletion, or modification of data, access data, and cause partial denial of service. CVSS 9.4.
- CVE-2026-73917Critical
Vulnerability in Oracle Fusion Middleware Helidon (Imperative Web Server component) affects versions 4.0.0-4.4.1. Easily exploitable flaw allows unauthenticated attacker with network access via HTTP to perform unauthorized creation, deletion, or modification of data and unauthorized access to data. CVSS score 9.1.
- CVE-2026-73916Critical
Vulnerability in Oracle Fusion Middleware Helidon (Imperative Web Server component) affects versions 3.0.0-3.2.17. Easily exploitable flaw allows unauthenticated attacker with network access via HTTP to perform unauthorized creation, deletion, or modification of data and unauthorized access to data. CVSS score 9.1.
- CVE-2026-73912Critical
Vulnerability in Oracle Fusion Middleware Helidon (Imperative Web Server component) affects versions 4.0.0-4.4.1. Easily exploitable flaw allows unauthenticated attacker with network access via HTTP to take over Helidon. CVSS score 9.8.
- CVE-2026-73905Critical
Vulnerability in Oracle Fusion Middleware Helidon (Imperative Web Server component) versions 4.0.0-4.4.1. Easily exploitable by unauthenticated attacker with network access via HTTP, allowing takeover of Helidon. CVSS 9.8 (high impact on confidentiality, integrity, and availability).
- CVE-2026-73866Critical
Vulnerability in Oracle Fusion Middleware Helidon (Imperative Web Server component) affects versions 4.0.0-4.4.1. Easily exploitable flaw allows unauthenticated attacker with network access via HTTP to perform unauthorized creation, deletion, or modification of data and unauthorized access to data. CVSS score 9.1.
Original NVD description (English source)
Vulnerability in the Helidon product of Oracle Fusion Middleware (component: Imperative Web Server). Supported versions that are affected are 3.0.0-3.2.19. Easily exploitable vulnerability allows unauthenticated attacker with network access via HTTP to compromise Helidon. While the vulnerability is in Helidon, attacks may significantly impact additional products (scope change). Successful attacks of this vulnerability can result in unauthorized creation, deletion or modification access to critical data or all Helidon accessible data. CVSS 3.1 Base Score 8.6 (Integrity impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:H/A:N).
Vulnerability data from NVD (NIST) · CISA KEV · EPSS