---
id: "CVE-2026-101396"
kind: "vulnerability"
aliases: ["CVE-2026-101396"]
title: "Oracle Siebel CRM Marketing: low-privilege users can modify critical data"
severity: "medium"
cvss: 4.7
epss: null
exploited: false
status: "open"
category: "package"
products: []
ecosystems: []
tags: ["crm", "oracle-siebel", "package", "self-hosted"]
not_affected_if: ["no-siebel-marketing"]
published_at: "2026-10-20T22:17:47+00:00"
first_seen_at: "2026-10-23T21:57:21+00:00"
updated_at: "2026-10-25T04:35:08+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-101396", "first_seen_at": "2026-10-23T21:57:21+00:00"}]
---

# Oracle Siebel CRM Marketing: low-privilege users can modify critical data

Oracle Siebel CRM's Marketing component has a flaw that lets a low-privileged user who can log on to the underlying infrastructure create, delete or modify data the product can access. The attack is hard to carry out and affects integrity only, with no confidentiality or availability impact according to the CVSS vector.

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

## How to check

- unknown

## Fix

- unknown

## Timeline

- 2026-10-23T21:57:21+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-101396

## 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. Difficult to exploit vulnerability allows low privileged attacker with logon to the infrastructure where Siebel Apps - Marketing executes to compromise Siebel Apps - Marketing.  Successful attacks of this vulnerability can result in  unauthorized creation, deletion or modification access to critical data or all Siebel Apps - Marketing accessible data. CVSS 3.1 Base Score 4.7 (Integrity impacts).  CVSS Vector: (CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:H/A:N).

---

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