---
id: "CVE-2026-101394"
kind: "vulnerability"
aliases: ["CVE-2026-101394"]
title: "Oracle Siebel Marketing: unauthenticated HTTP flaw allows limited data changes"
severity: "medium"
cvss: 5.3
epss: null
exploited: false
status: "open"
category: "vendor"
products: []
ecosystems: []
tags: ["crm", "marketing", "oracle-siebel", "self-hosted", "vendor"]
not_affected_if: ["no-network-exposure", "unaffected-version"]
published_at: "2026-10-20T22:17:47+00:00"
first_seen_at: "2026-10-23T21:57:21+00:00"
updated_at: "2026-10-25T04:24:34+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-101394", "first_seen_at": "2026-10-23T21:57:21+00:00"}]
---

# Oracle Siebel Marketing: unauthenticated HTTP flaw allows limited data changes

Oracle Siebel CRM's Marketing component, versions 17.0 through 26.9, has a flaw that lets an unauthenticated attacker reach it over the network via HTTP. A successful attack can update, insert or delete some data the Marketing application can access.

_Summary, check and fix written by a model from the sources; labelled as such._

## How to check

- Confirm whether Siebel CRM Marketing is deployed and which release it runs, against the affected range 17.0-26.9 (unknown how the sources expect this to be read from the installation)
- Check the Oracle Critical Patch Update advisory for the patch level that covers this release (unknown from the sources)

## Fix

- Apply the Oracle Siebel CRM patch that addresses this CVE for the installed Marketing release (unknown from the sources)
- Restrict HTTP access to the Siebel Marketing endpoints to trusted networks until patched (general mitigation, unknown from the sources)

## Timeline

- 2026-10-23T21:57:21+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-101394

## From the sources

Vulnerability in the Siebel Apps - Marketing product of Oracle Siebel CRM (component: Marketing).  Supported versions that are affected are 17.0-26.9. Easily exploitable vulnerability allows unauthenticated attacker with network access via HTTP to compromise Siebel Apps - Marketing.  Successful attacks of this vulnerability can result in  unauthorized update, insert or delete access to some of Siebel Apps - Marketing accessible data. CVSS 3.1 Base Score 5.3 (Integrity impacts).  CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N).

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_Free to read at a human pace. An API with keys and an MCP server are in preparation; early access: hello@infrastack.ai_