CVE-2026-73930: Vulnerability in the Helidon product of Oracle Fusion Middleware (component: Imperative Web Server). Supported…
CVE-2026-73930 · Severity: critical · CVSS 9.9 · Published 2026-08-18
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 and 4.0.0-4.5.2. 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 as well as unauthorized read access to a subset of Helidon accessible data and unauthorized ability to cause a partial denial of service (partial DOS) of Helidon. CVSS 3.1 Base Score 9.9 (Confidentiality, Integrity and Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:H/A:L).
No. Junglewise Threat Intelligence has no report of CVE-2026-73930 being exploited in the wild.
How severe is CVE-2026-73930?
Critical severity, with a CVSS score of 9.9, published 18 August 2026.
Which products and versions are affected?
Oracle Helidon. The advisory does not name versions.
Is there a fix for CVE-2026-73930?
No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
Am I affected by CVE-2026-73930?
Check whether you run Oracle Helidon. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.