CVE-2026-73880 Missing authorization in Helidon
A high-privileged attacker with local access can bypass authorization controls to read all data accessible by the Helidon web server.
- Exploited in the wild
- Not known
- Login needed
- An administrator
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-73880?
CVE-2026-73880 is a medium-severity missing authorization vulnerability in Oracle Helidon, published on 18 Aug 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
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 high privileged attacker with logon to the infrastructure where Helidon executes to compromise Helidon. Successful attacks of this vulnerability can result in unauthorized access to critical data or complete access to all Helidon accessible data. CVSS 3.1 Base Score 4.4 (Confidentiality impacts). CVSS Vector: (CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N).
Weakness: CWE-284
Which versions are affected by CVE-2026-73880?
It affects 1 product.
Products include Oracle Helidon.
How do I fix CVE-2026-73880?
No fix has been published for CVE-2026-73880 yet. Limit exposure of the affected software until one is available.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2026-73880 being exploited?
There is no known exploitation of CVE-2026-73880 in the wild and no public exploit code.
Other vulnerabilities in Oracle Helidon
Sources
Also known as GHSA-6w35-q4h6-6f67.