# CVE-2026-83154: Missing authorization in Siebel CRM End User

> Unauthenticated attackers can read, create, delete, or modify critical Siebel CRM data via SOAP requests.

- **Severity:** Critical 9.1 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N`)
- **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:** 15 Sep 2026
- **Also known as:** GHSA-mmxx-5x9f-vqch

## What is CVE-2026-83154?

CVE-2026-83154 is a critical missing authorization vulnerability in Oracle Siebel Crm, 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 Siebel CRM End User product of Oracle Siebel CRM (component: Open UI).  Supported versions that are affected are 17.0-26.7. Easily exploitable vulnerability allows unauthenticated attacker with network access via SOAP to compromise Siebel CRM End User.  Successful attacks of this vulnerability can result in  unauthorized creation, deletion or modification access to critical data or all Siebel CRM End User accessible data as well as  unauthorized access to critical data or complete access to all Siebel CRM End User accessible data. CVSS 3.1 Base Score 9.1 (Confidentiality and Integrity impacts).  CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N).

Weakness: CWE-306 (Missing Authentication for Critical Functionality), CWE-287 (Improper Authentication)

## Which versions are affected by CVE-2026-83154?

It affects 1 product.


Products: Oracle Siebel Crm.

## How do I fix CVE-2026-83154?

No fix has been published for CVE-2026-83154 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-83154 being exploited?

There is no known exploitation of CVE-2026-83154 in the wild and no public exploit code.

## Other vulnerabilities in Oracle Siebel Crm

- [CVE-2026-61317](https://insights.sbomify.com/CVE-2026-61317/): Auth bypass in Siebel CRM Cloud Applications (critical 9.9)
- [CVE-2026-62452](https://insights.sbomify.com/CVE-2026-62452/): Auth bypass in Siebel CRM Cloud Applications (critical 9.9)
- [CVE-2026-62512](https://insights.sbomify.com/CVE-2026-62512/): Auth bypass in Siebel CRM Cloud Applications (critical 9.9)
- [CVE-2026-62588](https://insights.sbomify.com/CVE-2026-62588/): Auth bypass in Siebel CRM Integration (critical 9.9)
- [CVE-2026-60711](https://insights.sbomify.com/CVE-2026-60711/): Auth bypass in Siebel CRM Cloud Applications (critical 9.9)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-83154 and fix it if it is affected.

What it is: CVE-2026-83154 is a critical missing authorization vulnerability in Oracle Siebel Crm, 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-2026-83154 in the wild and no public exploit code.

Affected product: Oracle Siebel Crm. 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-2026-83154/ (Markdown: https://insights.sbomify.com/CVE-2026-83154/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-83154
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-83154
- OSV: https://osv.dev/vulnerability/CVE-2026-83154

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-83154/
Summaries are generated and may contain mistakes; the official description above is the record.