CVE-2026-73935
HighCVSS 7.5Exploitation Probability (EPSS)
Low risk37th percentile - higher than 37% of all known CVEs
Summary
Vulnerability in Oracle Fusion Middleware Helidon product (component: Imperative Web Server) affecting versions 4.0.0-4.5.0. Easily exploitable by unauthenticated attacker with network access via HTTP/2, leading to hang or frequent crashes (complete DoS) of Helidon. CVSS 7.5 (Availability impact).
Risk Assessment
Attack can cause unavailability of Helidon-based services, leading to application downtime and potential financial losses.
Recommendation
Apply available security patches for Helidon versions 4.0.0-4.5.0. Restrict network access to the server to trusted sources only.
Other vulnerabilities in Helidon
See all- CVE-2026-101588Medium
Vulnerability in Helidon (component WebSocket) affecting versions 4.0.0-4.5.5 and 27.0.0. Allows unauthenticated attacker with network access via HTTP to gain unauthorized read access to a subset of Helidon data.
- CVE-2026-101586Medium
Vulnerability in Helidon (component helidon-webclient) affecting versions 4.0.0-4.5.5 and 27.0.0. Allows unauthenticated attacker with network access via HTTP to gain unauthorized read access to a subset of Helidon data.
- CVE-2026-101582Medium
Vulnerability in Helidon (component helidon-integrations-vault) affecting versions 4.0.0-4.5.5. Allows unauthenticated attacker with network access via HTTP to gain unauthorized read access to a subset of Helidon data; attacks may significantly impact additional products (scope change).
- CVE-2026-101580Medium
Vulnerability in Helidon (component helidon-security-providers-jwt) affecting versions 4.0.0-4.5.5 and 27.0.0. Allows unauthenticated attacker with network access via HTTP to gain unauthorized read access to a subset of Helidon data; attacks may significantly impact additional products (scope change).
- CVE-2026-101578Medium
Vulnerability in Helidon (component helidon-security-providers-google-login) affecting versions 4.0.0-4.5.5. Allows unauthenticated attacker with network access via HTTP to gain unauthorized read access to a subset of Helidon data.
- CVE-2026-101577Low
Vulnerability in the Helidon product (component: helidon-cors) affecting versions 4.0.0-4.5.5. A difficult to exploit vulnerability requires human interaction and allows an unauthenticated attacker with network access via HTTP to gain unauthorized update, insert or delete access to some data.
- CVE-2026-101576Low
Vulnerability in the Helidon product (component: LRA) affecting versions 4.0.0-4.5.5. A difficult to exploit vulnerability allows an unauthenticated attacker with network access via HTTP to gain unauthorized read access to a subset of Helidon accessible data.
- CVE-2026-101574Medium
Vulnerability in Oracle Fusion Middleware's Helidon product (component: OIDC) affecting versions 4.0.0-4.5.5 and 27.0.0. A difficult-to-exploit flaw allows an unauthenticated network attacker via HTTP to access critical data and modify some Helidon data, requiring user interaction and potentially impacting additional products.
- CVE-2026-101573Medium
Vulnerability in Oracle Fusion Middleware's Helidon product (component: helidon-security-providers-http-auth) affecting versions 3.0.0-3.2.21, 4.0.0-4.5.5 and 27.0.0. A difficult-to-exploit flaw allows an unauthenticated network attacker via HTTP to gain unauthorized access to critical Helidon data, potentially impacting additional products.
- CVE-2026-101571Medium
Vulnerability in Oracle Fusion Middleware's Helidon product (component: helidon-security-providers-idcs-mapper) affecting versions 3.0.0-3.2.21 and 4.0.0-4.5.5. A difficult-to-exploit flaw allows a low-privileged attacker logged into the infrastructure to gain unauthorized access to critical Helidon data, potentially impacting additional products.
Original NVD description (English source)
Vulnerability in the Helidon product of Oracle Fusion Middleware (component: Imperative Web Server). Supported versions that are affected are 4.0.0-4.5.0. Easily exploitable vulnerability allows unauthenticated attacker with network access via HTTP/2 to compromise Helidon. Successful attacks of this vulnerability can result in unauthorized ability to cause a hang or frequently repeatable crash (complete DOS) of Helidon. CVSS 3.1 Base Score 7.5 (Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H).
Vulnerability data from NVD (NIST) · CISA KEV · EPSS

