---
id: "CVE-2026-101476"
kind: "vulnerability"
aliases: ["CVE-2026-101476"]
title: "Oracle Siebel CRM Marketing: unauthenticated flaw allows limited data changes"
severity: "medium"
cvss: 4.3
epss: null
exploited: false
status: "open"
category: "vendor"
products: []
ecosystems: []
tags: ["oracle", "siebel-crm", "vendor"]
not_affected_if: []
published_at: "2026-10-20T22:17:56+00:00"
first_seen_at: "2026-10-23T21:57:22+00:00"
updated_at: "2026-10-25T04:39:17+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-101476", "first_seen_at": "2026-10-23T21:57:22+00:00"}]
---

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

Oracle Siebel CRM's Marketing component has a flaw reachable over HTTP without credentials. A successful attack, after a user takes an action, can modify or delete some data the application can access.

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

## Timeline

- 2026-10-23T21:57:22+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-101476

## 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 require human interaction from a person other than the attacker. 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 4.3 (Integrity impacts).  CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:R/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_