# CVE-2026-83461: Auth bypass in Oracle Mobile Application Server

> Unauthenticated attackers can access critical data and cause partial denial of service in Oracle Mobile Application Server via network access.

- **Severity:** High 8.2 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:L`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 15 Sep 2026
- **Updated:** 21 Sep 2026
- **Also known as:** GHSA-hm54-gfqc-2v44

## What is CVE-2026-83461?

CVE-2026-83461 is a high-severity authentication bypass vulnerability in Oracle Mobile Application Server, published on 15 Sep 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

Vulnerability in the Oracle Mobile Application Server product of Oracle E-Business Suite (component: MWA Terminal Server).  Supported versions that are affected are 12.2.3-12.2.15. Easily exploitable vulnerability allows unauthenticated attacker with network access via TCP to compromise Oracle Mobile Application Server.  Successful attacks of this vulnerability can result in  unauthorized access to critical data or complete access to all Oracle Mobile Application Server accessible data and unauthorized ability to cause a partial denial of service (partial DOS) of Oracle Mobile Application Server. CVSS 3.1 Base Score 8.2 (Confidentiality and Availability impacts).  CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:L).

Weakness: CWE-306 (Missing Authentication for Critical Functionality)

## Which versions are affected by CVE-2026-83461?

It affects 1 product.


Products: Oracle Mobile Application Server.

## How do I fix CVE-2026-83461?

No fix has been published for CVE-2026-83461 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-83461 being exploited?

There is no known exploitation of CVE-2026-83461 in the wild and no public exploit code.

## Other vulnerabilities in Oracle Mobile Application Server

- [CVE-2026-83462](https://insights.sbomify.com/CVE-2026-83462/): Auth bypass in Oracle Mobile Application Server (critical 9.8)
- [CVE-2026-83465](https://insights.sbomify.com/CVE-2026-83465/): Denial of service in Oracle Mobile Application Server (high 8.2)
- [CVE-2026-83464](https://insights.sbomify.com/CVE-2026-83464/): Privilege escalation in Oracle Mobile Application Server (high 8.1)
- [CVE-2026-83463](https://insights.sbomify.com/CVE-2026-83463/): Privilege escalation in Oracle Mobile Application Server (high 7.5)
- [CVE-2026-70732](https://insights.sbomify.com/CVE-2026-70732/): Missing authorization in Oracle Mobile Application Server (medium 6.5)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-83461 and fix it if it is affected.

What it is: CVE-2026-83461 is a high-severity authentication bypass vulnerability in Oracle Mobile Application Server, published on 15 Sep 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2026-83461 in the wild and no public exploit code.

Affected product: Oracle Mobile Application Server. 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-2026-83461/ (Markdown: https://insights.sbomify.com/CVE-2026-83461/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-83461
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-83461
- OSV: https://osv.dev/vulnerability/CVE-2026-83461

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-83461/
Summaries are generated and may contain mistakes; the official description above is the record.