# 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.

- **Severity:** Medium 6.8 (`CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Local or same network only
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 15 Sep 2026
- **Updated:** 18 Sep 2026
- **Also known as:** GHSA-w56v-492w-j8cm

## 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 (Improper Access Control)

## 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.

## Is CVE-2026-83278 being exploited?

There is no known exploitation of CVE-2026-83278 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-83278 and fix it if it is affected.

What it is: 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.
Exploitation: There is no known exploitation of CVE-2026-83278 in the wild and no public exploit code.

Affected product: Oracle Corporation Helidon. No package-level version data is available, so check the vendor advisory linked from the reference page.

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2026-83278/ (Markdown: https://insights.sbomify.com/CVE-2026-83278/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-83278
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-83278
- OSV: https://osv.dev/vulnerability/CVE-2026-83278

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-83278/
Summaries are generated and may contain mistakes; the official description above is the record.