CVE-2026-83278 Missing authorization in Helidon
An unauthenticated attacker on the local network segment can access and modify critical data in Helidon applications due to missing authorization checks.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-83278?
CVE-2026-83278 is a medium-severity missing authorization vulnerability in Oracle Corporation Helidon, published on 15 Sep 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: helidon-integrations-neo4j). Supported versions that are affected are 3.0.0-3.2.20 and 4.0.0-4.5.4. Difficult to exploit vulnerability allows unauthenticated attacker with access to the physical communication segment attached to the hardware where the Helidon executes to compromise Helidon. 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 access to critical data or complete access to all Helidon accessible data. CVSS 3.1 Base Score 6.8 (Confidentiality and Integrity impacts). CVSS Vector: (CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N).
Weakness: CWE-284
Which versions are affected by CVE-2026-83278?
How do I fix CVE-2026-83278?
No fix has been published for CVE-2026-83278 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-2026-83278 being exploited?
There is no known exploitation of CVE-2026-83278 in the wild and no public exploit code.
Sources
Also known as GHSA-w56v-492w-j8cm.